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Hetzel, R., Urbanevych, V., Bolke, A., Kasper, J., Kercz, M., Kołodziej, M., Magiera, A., Mueller, F., Müller, S., Rafecas, M., Rusiecka, K., Schug, D., Schulz, V., Stahl, A., Weissler, B., Wong, M.-L. and Wrońska, A.: Near-field coded-mask technique and its potential for proton therapy monitoring, Physics in Medicine & Biology, 68(24), 245028, 2023, DOI: 10.1088/1361-6560/ad05b2.
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@article{Hetzel_2023, abstract = {Objective. Prompt-gamma imaging encompasses several approaches to the online monitoring of the beam range or deposited dose distribution in proton therapy. We test one of the imaging techniques - a coded mask approach - both experimentally and via simulations. Approach. Two imaging setups have been investigated experimentally. Each of them comprised a structured tungsten collimator in the form of a modified uniformly redundant array mask and a LYSO:Ce scintillation detector of fine granularity. The setups differed in detector dimensions and operation mode (1D or 2D imaging). A series of measurements with radioactive sources have been conducted, testing the performance of the setups for near-field gamma imaging. Additionally, Monte Carlo simulations of a larger setup of the same type were conducted, investigating its performance with a realistic gamma source distribution occurring during proton therapy. Main results. The images of point-like sources reconstructed from two small-scale prototypes’ data using the maximum-likelihood expectation maximisation algorithm constitute the experimental proof of principle for the near-field coded-mask imaging modality, both in the 1D and the 2D mode. Their precision allowed us to calibrate out certain systematic offsets appearing due to the limited alignment accuracy of setup elements. The simulation of the full-scale setup yielded a mean distal falloff retrieval precision of 0.72 mm in the studies for beam energy range 89.5–107.9 MeV and with 1 × 108 protons (a typical number for distal spots). The implemented algorithm of image reconstruction is relatively fast—a typical procedure needs several seconds. Significance. Coded-mask imaging appears a valid option for proton therapy monitoring. The results of simulations let us conclude that the proposed full-scale setup is competitive with the knife-edge-shaped and the multi-parallel slit cameras investigated by other groups.}, author = {Hetzel, Ronja and Urbanevych, Vitalii and Bolke, Andreas and Kasper, Jonas and Kercz, Monika and Kołodziej, Magdalena and Magiera, Andrzej and Mueller, Florian and Müller, Sara and Rafecas, Magdalena and Rusiecka, Katarzyna and Schug, David and Schulz, Volkmar and Stahl, Achim and Weissler, Bjoern and Wong, Ming-Liang and Wrońska, Aleksandra}, journal = {Physics in Medicine & Biology}, keywords = {nuci}, month = 12, number = 24, pages = 245028, publisher = {IOP Publishing}, title = {Near-field coded-mask technique and its potential for proton therapy monitoring}, volume = 68, year = 2023 }
Ferrero, V., Werner, J., Cerello, P., Fiorina, E., Vignati, A., Pennazio, F. and Rafecas, M.: Estimating the stopping power distribution during proton therapy: A proof of concept, Frontiers in Physics, 2022, DOI: 10.3389/fphy.2022.971767.
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@article{ferrero2022estimating, abstract = {Objective. We introduce a new treatment verification technique to estimate the primary particle's stopping power from prompt gamma timing measurements in proton therapy. Approach. The starting point is the Spatio-temporal Emission Recostruction technique, which provides the time-depth distribution of the emitted prompt photons with a multiple Prompt-Gamma Timing detector setup based on Lanthanum Bromide crystals. A dedicated formalism based on an analytical approximation of the stopping power is developed to obtain the desired information. Its performance is evaluated in a proof of concept configuration via Monte Carlo simulations of monochromatic proton beams impinging on a homogeneous PMMA phantom. Main Results. Results indicate stopping power estimations as good as 3.8% with respect to NIST values, and range estimations within 0.3 cm (standard deviation), when considering 250 ps FWHM timing resolution. Significance. The current study shows, for the first time, the feasibility of evaluating the stopping power of primary beams with a technique that can be performed in-vivo, opening up new possibilities in the field of treatment verification and therapy optimization.}, author = {Ferrero, Veronica and Werner, Julius and Cerello, Piergiorgio and Fiorina, Elisa and Vignati, Anna and Pennazio, Francesco and Rafecas, Magdalena}, editor = {Vasquez Osorio, Eliana Maria}, journal = {Frontiers in Physics}, keywords = {imt}, month = {09}, publisher = {Frontiers}, title = {Estimating the stopping power distribution during proton therapy: A proof of concept}, type = {article}, year = 2022 }
Wegner, F., Lüdtke-Buzug, K., Cremers, S., Friedrich, T., Sieren, M. M., Haegele, J., Koch, M. A., Saritas, E. U., Borm, P., Buzug, T. M., Barkhausen, J. and Ahlborg, M.: Bimodal Interventional Instrument Markers for Magnetic Particle Imaging and Magnetic Resonance Imaging---A Proof-of-Concept Study, Nanomaterials, 12(10), 1758, 2022, DOI: 10.3390/nano12101758.
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@article{Wegner_2022, author = {Wegner, Franz and Lüdtke-Buzug, Kerstin and Cremers, Sjef and Friedrich, Thomas and Sieren, Malte M. and Haegele, Julian and Koch, Martin A. and Saritas, Emine U. and Borm, Paul and Buzug, Thorsten M. and Barkhausen, Joerg and Ahlborg, Mandy}, journal = {Nanomaterials}, keywords = {buzugthorsten}, month = {05}, number = 10, pages = 1758, publisher = {{MDPI}}, title = {Bimodal Interventional Instrument Markers for Magnetic Particle Imaging and Magnetic Resonance Imaging—A Proof-of-Concept Study}, volume = 12, year = 2022 }
Gräfe, K. and Buzug, T. M.: Simulation study to minimize the single-sided FFP MPI scanner, International Journal on Magnetic Particle Imaging, Vol 6 No 2 Suppl. 1 (2020), 2020, DOI: https://doi.org/10.18416/IJMPI.2020.2009047.
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@article{noauthororeditor, author = {Gräfe, Ksenija and Buzug, Thorsten M.}, journal = {International Journal on Magnetic Particle Imaging}, keywords = {buzugthorsten}, pages = {Vol 6 No 2 Suppl. 1 (2020)}, title = {Simulation study to minimize the single-sided FFP MPI scanner}, year = 2020 }
Chen, X., Behrends, A., Malhotra, A., Neumann, A. and Buzug, T. M.: Temperature-dependent spectrum measurement using a magnetic particle spectrometer, International Journal on Magnetic Particle Imaging, 6(2), Suppl 1, 2020, DOI: https://doi.org/10.18416/IJMPI.2020.2009034.
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@article{chen2020temperaturedependent, author = {Chen, Xin and Behrends, André and Malhotra, Ankit and Neumann, Alexander and Buzug, Thorsten M.}, journal = {International Journal on Magnetic Particle Imaging}, keywords = {samba}, number = 2, pages = {Suppl 1}, title = {Temperature-dependent spectrum measurement using a magnetic particle spectrometer}, volume = 6, year = 2020 }
Blancke Soares, Y., Gräfe, K., Lüdtke-Buzug, K. and Buzug, T. M.: Investigation of the spatial resolution and penetration depth of a single-sided MPI device in three-dimensional imaging, International Journal on Magnetic Particle Imaging, Vol 6 No 2 Suppl. 1 (2020), 2020, DOI: https://doi.org/10.18416/IJMPI.2020.2009053.
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@article{noauthororeditor, author = {Blancke Soares, Yvonne and Gräfe, Ksenija and Lüdtke-Buzug, Kerstin and Buzug, Thorsten M.}, journal = {International Journal on Magnetic Particle Imaging}, keywords = {buzugthorsten}, pages = {Vol 6 No 2 Suppl. 1 (2020)}, title = {Investigation of the spatial resolution and penetration depth of a single-sided MPI device in three-dimensional imaging}, year = 2020 }
Von Gladiss, A., Graeser, M., Cordes, A., Bakenecker, A. C., Behrends, A., Chen, X. and Buzug, T. M.: Investigating Spatial Resolution, Field Sequences and Image Reconstruction Strategies using Hybrid Phantoms in MPI, International Journal on Magnetic Particle Imaging, 6(1), 2020, DOI: 10.18416/IJMPI.2020.2003004.
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@article{vonGladiss2020IJMPI, author = {Von Gladiss, Anselm and Graeser, Matthias and Cordes, Aileen and Bakenecker, Anna C. and Behrends, André and Chen, Xin and Buzug, Thorsten M.}, journal = {International Journal on Magnetic Particle Imaging}, keywords = {buzugthorsten}, number = 1, publisher = {International Journal on Magnetic Particle Imaging}, title = {Investigating Spatial Resolution, Field Sequences and Image Reconstruction Strategies using Hybrid Phantoms in MPI}, volume = 6, year = 2020 }
Friedrich, T., Wattenberg, M., Tüshaus, L., Wünsch, L. and Buzug, T. M.: Presurgical practice of supracondylar domosteotomie of cubitus varus deformity on 3D printed humerus, Transactions on Additive Manufacturing Meets Medicine, 1(2), Vol 1 (2019): Trans. AMMM-, 2019, DOI: 10.18416/AMMM.2019.1909S01T06.
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@article{https://doi.org/10.18416/ammm.2019.1909s01t06, abstract = {Complicated fractures of bones can be difficult to treat, and there is a high probability that further operative corrections need to be carried out. In the present work, we present a case study, where a model of the humerus of a six-year-old male patient was 3D-printed from a segmented CT-dataset for a preoperative optimization of the geometric parameters of a supracondylar domosteotomy. The experimental simulation of the treatment has proven very useful to the physician, and the patient has been treated successfully.}, author = {Friedrich, Thomas and Wattenberg, Maximilian and Tüshaus, Ludger and Wünsch, Lutz and Buzug, Thorsten M.}, journal = {Transactions on Additive Manufacturing Meets Medicine}, keywords = {buzugthorsten}, number = 2, pages = {Vol 1 (2019): Trans. AMMM-}, publisher = {Infinite Science Publishing}, title = {Presurgical practice of supracondylar domosteotomie of cubitus varus deformity on 3D printed humerus}, volume = 1, year = 2019 }
Malhotra, A., von Gladiss, A., Behrends, A., Friedrich, T., Neumann, A., Buzug, T. M. and Lüdtke-Buzug, K.: Tracking the Growth of Superparamagnetic Nanoparticles with an In-Situ Magnetic Particle Spectrometer (INSPECT), Scientific Reports, 9(10538), 2019, DOI: https://doi.org/10.1038/s41598-019-46882-6.
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@article{malhotra2019tracking, abstract = {Magnetic Particle Spectroscopy (MPS) is a measurement technique to determine the magnetic properties of superparamagnetic iron oxide nanoparticles (SPIONs) in an oscillating magnetic field as applied in Magnetic Particle Imaging (MPI). State of the art MPS devices are solely capable of measuring the magnetization response of the SPIONs to an oscillatory magnetic excitation retrospectively, i.e. after the synthesis process. In this contribution, a novel in-situ magnetic particle spectrometer (INSPECT) is presented, which can be used to monitor the entire synthesis process from particle genesis via growth to the stable colloidal suspension of the nanoparticles in real time. The device is suitable for the use in a biochemistry environment. It has a chamber size of 72 mm such that a 100 ml reaction flask can be used for synthesis. For an alkaline-based precipitation, the change of magnetic properties of SPIONs during the nucleation and growth phase of the synthesis is demonstrated. The device is able to record the changes in the amplitude and phase spectra, and, in turn, the hysteresis. Hence, it is a powerful tool for an in-depth understanding of the nanoparticle formation dynamics during the synthesis process.}, author = {Malhotra, Ankit and von Gladiss, Anselm and Behrends, André and Friedrich, Thomas and Neumann, Alexander and Buzug, Thorsten M. and Lüdtke-Buzug, Kerstin}, journal = {Scientific Reports}, keywords = {luedtkekerstin}, month = {07}, number = 10538, title = {Tracking the Growth of Superparamagnetic Nanoparticles with an In-Situ Magnetic Particle Spectrometer (INSPECT)}, volume = 9, year = 2019 }
Ehrhardt, J., Ahlborg, M., Uzunova, H., Buzug, T. M. and Handels, H.: Temporal Polyrigid Registration for Patch-based MPI Reconstruction of Moving Objects, International Journal on Magnetic Particle Imaging, 5(1), 1908001, 2019, DOI: 10.18416/ijmpi.2019.1908001.
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@article{ehrhardt2019temporal, author = {Ehrhardt, Jan and Ahlborg, Mandy and Uzunova, Hristina and Buzug, Thorsten M. and Handels, Heinz}, journal = {International Journal on Magnetic Particle Imaging}, keywords = {buzugthorsten}, number = 1, pages = 1908001, title = {Temporal Polyrigid Registration for Patch-based MPI Reconstruction of Moving Objects}, volume = 5, year = 2019 }
Ferrero, V., Pennazio, F., Cerello, P., Fiorina, E., Garbolino, S., Monaco, V., Wheadon, R. and Rafecas, M.: Evaluation of in-beam PET treatment verification in proton therapy with different reconstruction methods, IEEE Transactions on Radiation and Plasma Medical Sciences, 2019, DOI: 10.1109/TRPMS.2019.2942713.
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@article{8845670, abstract = {In-beam PET monitoring can provide early treatment assessment in proton therapy. However, open ring configurations and low positron emitter production yields degrade image quality, hampering the assessment accuracy. To achieve the highest precision for range monitoring, it is compulsory to mitigate image noise and compensate for data truncation. The goal of this work is to study the performance of state-of-the-art algorithms for in-beam PET image reconstruction, by evaluating the impact of the system response model and assessing the accuracy of range measurements. The approaches investigated here were Maximum-A-Posteriori algorithms combined with Total-Variation and Median-Root Priors. Maximum-Likelihood-Expectation-Maximization was used as reference. To compute the system matrix, different models were compared: a precise Monte Carlo model, and Single-Ray Tracing with and without Gaussian blurring in image space. The proposed methods were tested on simulations of Spread-Out-Bragg-Peaks delivered on phantoms. The I3PET scanner geometry was used as a case study. After image post-processing, the explored methods delivered similar results. Our work demonstrates the feasibility and reliability of using a simple and fast reconstruction method to perform range evaluations, given the correct image post-processing.}, author = {{Ferrero}, V. and {Pennazio}, F. and {Cerello}, P. and {Fiorina}, E. and {Garbolino}, S. and {Monaco}, V. and {Wheadon}, R. and {Rafecas}, M.}, journal = {IEEE Transactions on Radiation and Plasma Medical Sciences}, keywords = {imt}, title = {Evaluation of in-beam PET treatment verification in proton therapy with different reconstruction methods}, year = 2019 }
von Gladiss, A., Graeser, M., Szwargulski, P., Knopp, T. and Buzug, T. M.: Hybrid System Calibration for Multidimensional Magnetic Particle Imaging, Physics in Medicine and Biology, 62(9), 3392–3406, 2017, DOI: 10.1088/1361-6560/aa5340.
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@article{vongladiss2017hybrid, author = {von Gladiss, Anselm and Graeser, Matthias and Szwargulski, Patryk and Knopp, Tobias and Buzug, Thorsten M.}, journal = {Physics in Medicine and Biology}, keywords = {imt}, number = 9, pages = {3392-3406}, title = {Hybrid System Calibration for Multidimensional Magnetic Particle Imaging}, volume = 62, year = 2017 }
Graeser, M., von Gladiss, A., Friedrich, T. and Buzug, T. M.: SNR and Discretization Enhancement for System Matrix Determination by Decreasing the Gradient in Magnetic Particle Imaging, International Journal on Magnetic Particle Imaging, 3(1), 2017, DOI: 10.18416/IJMPI.2017.1703019.
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@article{graeser2017discretization, author = {Graeser, Matthias and von Gladiss, Anselm and Friedrich, Thomas and Buzug, Thorsten M.}, journal = {International Journal on Magnetic Particle Imaging}, keywords = {imt}, number = 1, publisher = {Infinite Science Publishing}, title = {SNR and Discretization Enhancement for System Matrix Determination by Decreasing the Gradient in Magnetic Particle Imaging}, volume = 3, year = 2017 }
Maass, M., Bente, K., Ahlborg, M., Medimagh, H., Phan, H., Buzug, T. M. and Mertins, A.: Optimized Compression of MPI System Matrices Using a Symmetry-Preserving Secondary Orthogonal Transform, International Journal on Magnetic Particle Imaging, 2(1), 1607002, 2016, DOI: 10.18416/ijmpi.2016.1607002.
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@article{maass2016optimized, author = {Maass, Marco and Bente, Klaas and Ahlborg, Mandy and Medimagh, Hanne and Phan, Huy and Buzug, Thorsten M. and Mertins, Alfred}, journal = {International Journal on Magnetic Particle Imaging}, keywords = {buzugthorsten}, number = 1, pages = 1607002, title = {Optimized Compression of MPI System Matrices Using a Symmetry-Preserving Secondary Orthogonal Transform}, volume = 2, year = 2016 }
Erb, W., Kaethner, C., Ahlborg, M. and Buzug, T.: Bivariate Lagrange interpolation at the node points of non-degenerate Lissajous curves, Numerische Mathematik, 133(4), 685–705, 2016, DOI: 10.1007/s00211-015-0762-1.
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@article{Erb2015a, author = {Erb, Wolfgang and Kaethner, Christian and Ahlborg, Mandy and Buzug, ThorstenM.}, journal = {Numerische Mathematik}, keywords = {AhlborgMandy}, number = 4, pages = {685–705}, publisher = {Springer Berlin Heidelberg}, title = {Bivariate Lagrange interpolation at the node points of non-degenerate Lissajous curves}, volume = 133, year = 2016 }
Nothnagel, N., Rahmer, J., Gleich, B., Halkola, A., Buzug, T. and Borgert, J.: Steering of Magnetic Devices with a Magnetic Particle Imaging System, IEEE Transactions on Biomedical Engineering, PP(99), 7396945, 2016, DOI: 10.1109/TBME.2016.2524070.
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@article{7396945, abstract = {Small magnetic devices have been steered in arbitrary direction and with variable force using a preclinical demonstrator system for magnetic particle imaging (MPI). Fast localization due to the high imaging rate of over 40 volumes per second and strong forces due to the high field gradient of more than 1 T/m render an MPI system a good platform for image-guided steering of magnetic devices. In this paper, these capabilities are demonstrated in phantom experiments, where a closed feedback loop has been realized to exert translational forces in horizontal and vertical direction on a magnetic device moving in a viscous medium. The MPI system allows for the controlled application of those forces by combining variable homogeneous fields with strong field gradients.}, author = {Nothnagel, N. and Rahmer, J. and Gleich, B. and Halkola, A. and Buzug, T. and Borgert, J.}, journal = {IEEE Transactions on Biomedical Engineering}, keywords = {samba}, number = 99, pages = 7396945, title = {Steering of Magnetic Devices with a Magnetic Particle Imaging System}, volume = {PP}, year = 2016 }
Ahlborg, M., Kaethner, C., Knopp, T., Szwargulski, P. and Buzug, T. M.: Using data redundancy gained by patch overlaps to reduce truncation artifacts in magnetic particle imaging, Physics in Medicine and Biology, 61(12), 4583, 2016, DOI: 10.1088/0031-9155/61/12/4583.
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@article{0031-9155-61-12-4583, abstract = {The imaging technology magnetic particle imaging allows the detection of magnetic material, in particular superparamagnetic nanoparticles, by remagnetization of the material via magnetic fields. The application is aimed at medical imaging where the particles are applied as tracer directly into the blood stream. Medical safety considerations such as peripheral nerve stimulation limit the maximal amplitude of the magnetic fields and in turn the field of view size. To handle this constraint the concept of patches was introduced, which allows a shift of a field of view to different positions in order to enlarge the imaging area. If this is done statically an overlap of patches can be used to reduce truncation artifacts occurring at the adjacent edges. In this contribution, a differentiation of two different kinds of patch overlaps, i.e. a trajectory and a system matrix overlap, is made. Further, different concepts to combine the resulting redundant information are investigated with respect to the reduction of truncation artifacts. The methods are analyzed in detail in a simulation study and validated on experimental data.}, author = {Ahlborg, M and Kaethner, C and Knopp, T and Szwargulski, P and Buzug, T M}, journal = {Physics in Medicine and Biology}, keywords = {buzugthorsten}, number = 12, pages = 4583, title = {Using data redundancy gained by patch overlaps to reduce truncation artifacts in magnetic particle imaging}, volume = 61, year = 2016 }
Ulloa, P., Wottschel, V. and Koch, A.: Studying the extracellular contribution to the double wave vector diffusion-weighted signal, Current Directions in Biomedical Engineering, 1(1), 240–244, 2015, DOI: 10.1515/cdbme-2015-0060.
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@article{Ulloa2015b, author = {Ulloa, P. and Wottschel, V. and Koch, A.M.}, journal = {Current Directions in Biomedical Engineering}, keywords = {UlloaPatricia}, number = 1, pages = {240-244}, title = {Studying the extracellular contribution to the double wave vector diffusion-weighted signal}, volume = 1, year = 2015 }
Debbeler, C., Boy, A. and Lüdtke-Buzug, K.: Synthesis of Superparamagnetic Iron Oxide Nanoparticles under Ultrasound Control, Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung, 60(s1), s-27, 2015, DOI: 10.1515/bmt-2015-5000.
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@article{Debbeler2015b, author = {Debbeler, C. and Boy, A. and Lüdtke-Buzug, K.}, journal = {Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung}, keywords = {IMT}, number = {s1}, pages = {s-27}, title = {Synthesis of Superparamagnetic Iron Oxide Nanoparticles under Ultrasound Control}, volume = 60, year = 2015 }
Stille, M. and Buzug, T.: Metal artifact reduction by projection replacements and non-local prior image integration, Current Directions in Biomedical Engineering, 1(1), 100–103, 2015, DOI: 10.1515/cdbme-2015-0026.
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@article{Stille2015b, author = {Stille, M. and Buzug, T.M.}, journal = {Current Directions in Biomedical Engineering}, keywords = {StilleMaik}, number = 1, pages = {100-103}, publisher = {De Gruyter}, title = {Metal artifact reduction by projection replacements and non-local prior image integration}, volume = 1, year = 2015 }
Bringout, G. and Buzug, T.: Coil Design for Magnetic Particle Imaging: Application for a Preclinical Scanner, IEEE Transactions on Magnetics, 51(2), 5100808, 2014, DOI: 10.1109/TMAG.2014.2344917.
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@article{Bringout2014b, abstract = {A method to design electromagnetic coils for magnetic particle imaging (MPI) scanners is presented. Three different coils for a rabbit sized scanner are designed, namely, a cylindrical drive coil, a biplanar drive coil, and a quadrupole. Based on the inverse boundary elements method, the optimization of all coils used in an MPI scanner is possible. The inverse problem is solved using the Tikhonov regularization and a quadratic programming with quadratic constraints algorithm. Depending on the chosen objectives, the coils can be designed to precisely generate a given field, having a small inductance, resistance, or having a smooth winding pattern. The properties of a cylindrical drive coil are then validated on a prototype. The use of this technique allows the optimization of the scanner design, to enhance the imaging capacity, and to easily gain control over the key properties of the coils in order to scale up scanners to human size.}, author = {Bringout, G. and Buzug, T.M.}, journal = {IEEE Transactions on Magnetics}, keywords = {BringoutGael}, month = {02}, number = 2, pages = 5100808, title = {Coil Design for Magnetic Particle Imaging: Application for a Preclinical Scanner}, volume = 51, year = 2014 }
Baumann, K., Stegmann-Frehse, J., Rody, A., Gräfe, K., Lüdtke-Buzug, K., Buzug, T. and Finas, D.: Weiterentwicklung des SNLB-Konzept unter Verwendung von SPIOs beim Mammakarzinom - Prozessierung der Nanopartikel im Organismus, Senologie, 11-A13, 2014, DOI: 10.1055/s-0034-1375372.
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@article{Baumann2014a, author = {Baumann, K and Stegmann-Frehse, J and Rody, A and Gräfe, K and Lüdtke-Buzug, K and Buzug, T and Finas, D}, journal = {Senologie}, keywords = {IMT}, month = {05}, publisher = {Thieme Publishing Group}, title = {Weiterentwicklung des {SNLB}-Konzept unter Verwendung von {SPIOs} beim Mammakarzinom - Prozessierung der Nanopartikel im Organismus}, volume = {11-A13}, year = 2014 }
Bente, K., Weber, M., Graeser, M., Sattel, T. F., Erbe, M. and Buzug, T. M.: Electronic Field Free Line Rotation and Relaxation Deconvolution in Magnetic Particle Imaging, IEEE Transactions on Medical Imaging, 34(2), 644–651, 2014, DOI: 10.1109/TMI.2014.2364891.
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@article{Bente2014a, abstract = {It has been shown that magnetic particle imaging (MPI), an imaging method suggested in 2005, is capable of measuring the spatial distribution of magnetic nanoparticles. Since the particles can be administered as biocompatible suspensions, this method promises to perform well as a tracer-based medical imaging technique. It is capable of generating real-time images, which will be useful in interventional procedures, without utilizing any harmful radiation. To obtain a signal from the administered superparamagnetic iron oxide (SPIO) particles, a sinusoidal changing external homogeneous magnetic field is applied. To achieve spatial encoding, a gradient field is superimposed. Conventional MPI works with a spatial encoding field that features a field free point (FFP). To increase sensitivity, an improved spatial encoding field, featuring a field free line (FFL) can be used. Previous FFL scanners, featuring a 1-D excitation, could demonstrate the feasibility of the FFL-based MPI imaging process. In this work, an FFL-based MPI scanner is presented that features a 2-D excitation field and, for the first time, an electronic rotation of the spatial encoding field. Furthermore, the role of relaxation effects in MPI is starting to move to the center of interest. Nevertheless, no reconstruction schemes presented thus far include a dynamical particle model for image reconstruction. A first application of a model that accounts for relaxation effects in the reconstruction of MPI images is presented here in the form of a simplified, but well performing strategy for signal deconvolution. The results demonstrate the high impact of relaxation deconvolution on the MPI imaging process.}, author = {Bente, K. and Weber, M. and Graeser, M. and Sattel, T. F. and Erbe, M. and Buzug, T. M.}, journal = {IEEE Transactions on Medical Imaging}, keywords = {WeberMatthias}, month = {02}, number = 2, pages = {644-651}, title = {Electronic Field Free Line Rotation and Relaxation Deconvolution in Magnetic Particle Imaging}, volume = 34, year = 2014 }
Kratz, B., Weyers, I. and Buzug, T. M.: A fully 3D approach for metal artifact reduction in computed tomography, Medical Physics, 39(11), 7042–7054, 2012, DOI: 10.1118/1.4762289.
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@article{Kratz2012b, abstract = {Purpose: In computed tomographyimaging metal objects in the region of interest introduce inconsistencies during data acquisition. Reconstructing these data leads to an image in spatial domain including star-shaped or stripe-like artifacts. In order to enhance the quality of the resulting image the influence of the metal objects can be reduced. Here, a metal artifact reduction (MAR) approach is proposed that is based on a recomputation of the inconsistent projection data using a fully three-dimensional Fourier-based interpolation. The success of the projection space restoration depends sensitively on a sensible continuation of neighboring structures into the recomputed area. Fortunately, structural information of the entire data is inherently included in the Fourier space of the data. This can be used for a reasonable recomputation of the inconsistent projection data. Methods: The key step of the proposed MAR strategy is the recomputation of the inconsistent projection data based on an interpolation using nonequispaced fast Fourier transforms (NFFT). The NFFT interpolation can be applied in arbitrary dimension. The approach overcomes the problem of adequate neighborhood definitions on irregular grids, since this is inherently given through the usage of higher dimensional Fourier transforms. Here, applications up to the third interpolation dimension are presented and validated. Furthermore, prior knowledge may be included by an appropriate damping of the transform during the interpolation step. This MAR method is applicable on each angular view of a detector row, on two-dimensional projection data as well as on three-dimensional projection data, e.g., a set of sequential acquisitions at different spatial positions, projection data of a spiral acquisition, or cone-beam projection data. Results: Results of the novel MAR scheme based on one-, two-, and three-dimensional NFFT interpolations are presented. All results are compared in projection data space and spatial domain with the well-known one-dimensional linear interpolation strategy. Conclusions: In conclusion, it is recommended to include as much spatial information into the recomputation step as possible. This is realized by increasing the dimension of the NFFT. The resulting image quality can be enhanced considerably.}, author = {Kratz, Bärbel and Weyers, Imke and Buzug, Thorsten M.}, journal = {Medical Physics}, keywords = {MetalArtefactReduction}, number = 11, pages = {7042-7054}, title = {A fully 3D approach for metal artifact reduction in computed tomography}, volume = 39, year = 2012 }
Buzug, T., Sattel, T., Erbe, M., Biederer, S., Borgert, J., Finas, D., Dietrich, K., Vogt, F., Barkhausen, J., Lüdtke-Buzug, K. and Knopp, T.: Alternative Spulentopologien für Magnetic-Particle-Imaging, RöFo: Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren, 182(11), A56, 2010, DOI: 10.1055/s-0030-1268341.
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@article{Buzug_2010, author = {Buzug, TM and Sattel, TF and Erbe, M and Biederer, S and Borgert, J and Finas, D and Dietrich, K and Vogt, F and Barkhausen, J and Lüdtke-Buzug, K and Knopp, T}, journal = {RöFo: Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren}, keywords = {IMT}, month = 11, number = 11, pages = {A56}, publisher = {Thieme Publishing Group}, title = {Alternative Spulentopologien für Magnetic-Particle-Imaging}, volume = 182, year = 2010 }
Biederer, S., Knopp, T., Sattel, T. F., Lüdtke-Buzug, K., Gleich, B., Weizenecker, J., Borgert, J. and Buzug, T. M.: Magnetization response spectroscopy of superparamagnetic nanoparticles for magnetic particle imaging, Journal of Physics D: Applied Physics, 42(20), 205007, 2009, DOI: 10.1088/0022-3727/42/20/205007.
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@article{Biederer2009d, abstract = {Magnetic particle imaging (MPI) is a tomographic imaging modality sensitive to the spatial distribution of magnetic particles. The spectrometer, described in this paper, is capable of measuring the remagnetization spectrum of superparamagnetic nanoparticles. With this spectrometer the suitability of particles, for MPI, can be characterized. Furthermore, the spectrometer can be used to estimate the particle size distribution, which allows for more accurate simulations in MPI.}, author = {Biederer, S and Knopp, T and Sattel, T F and Lüdtke-Buzug, K and Gleich, B and Weizenecker, J and Borgert, J and Buzug, T M}, journal = {Journal of Physics D: Applied Physics}, keywords = {MPS}, number = 20, pages = 205007, title = {Magnetization response spectroscopy of superparamagnetic nanoparticles for magnetic particle imaging}, volume = 42, year = 2009 }
Scheer, M., Arnold, S., Neugebauer, J., Ulrich, H., Buzug, T. M., Addicks, K. and Zoeller, J. E.: Reconstruction of Bony Defects in Rats with Pulp Derived Stem Cells, Journal of Cranio-Maxillofacial Surgery, 36, 157–158, 2008.
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@article{Scheer2008a, author = {Scheer, M. and Arnold, S. and Neugebauer, J. and Ulrich, H. and Buzug, T. M. and Addicks, K. and Zoeller, J. E.}, journal = {Journal of Cranio-Maxillofacial Surgery}, keywords = {IMT}, pages = {157-158}, title = {Reconstruction of Bony Defects in Rats with Pulp Derived Stem Cells}, volume = 36, year = 2008 }
Brinks, R. and Buzug, T.: Image reconstruction in positron emission tomography (PET): The 90th anniversary of Radon’s solution, Biomedical Engineering / Biomedizinische Technik, 52, 361–364, 2007, DOI: 10.1515/BMT.2007.060.
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@article{Brinks2007a, author = {Brinks, Ralph and Buzug, T.M.}, journal = {Biomedical Engineering / Biomedizinische Technik}, keywords = {IMT}, pages = {361-364}, title = {Image reconstruction in positron emission tomography (PET): The 90th anniversary of Radon’s solution}, volume = 52, year = 2007 }

Inbook[ to top ]

Buzug, T.: Infrarot-Bildgebung, In: Medizintechnik, Springer, Berlin/Heidelberg, 367–373, 2011, DOI: 10.1007/978-3-540-34103-1_20.
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@inbook{noKey, address = {Berlin/Heidelberg}, author = {Buzug, T.M.}, booktitle = {Medizintechnik}, editor = {Kramme, Rüdiger}, keywords = {IMT}, pages = {367-373}, publisher = {Springer}, title = {Infrarot-Bildgebung}, year = 2011 }
Hartmann, U., Berti, G., Schmidt, J. and Buzug, T.: Biomechanical modelling in sports - selected applications, In: Computers in Sport, WIT Press, Ashurst Lodge, Ashurst, Southampton, UK, 189–215, 2008, DOI: 10.2495/978-1-84564-064-4/07.
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@inbook{Hartmann_2008, address = {Ashurst Lodge, Ashurst, Southampton, UK}, author = {Hartmann, U. and Berti, G. and Schmidt, J.G. and Buzug, T.M.}, booktitle = {Computers in Sport}, keywords = {IMT}, pages = {189-215}, publisher = {WIT Press}, title = {Biomechanical modelling in sports - selected applications}, year = 2008 }
Buzug, T.: Computertomographie (CT), In: Medizintechnik, Springer, Berlin/Heidelberg, 249–270, 2007, DOI: 10.1007/978-3-540-34103-1_15.
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@inbook{noKey, address = {Berlin/Heidelberg}, author = {Buzug, T.M.}, booktitle = {Medizintechnik}, editor = {Kramme, Rüdiger}, keywords = {IMT}, pages = {249-270}, publisher = {Springer}, title = {Computertomographie (CT)}, year = 2007 }

Inproceedings[ to top ]

Schumacher, J., Aderhold, E., Stagge, P., Ahlborg, M., Buzug, T. M. and Graeser, M.: Simulation of a Modular Coil Unit for a Preclinical MPI Scanner, 2024, DOI: 10.18416/IJMPI.2024.2403037.
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@inproceedings{https://doi.org/10.18416/ijmpi.2024.2403037, author = {Schumacher, Jonas and Aderhold, Eric and Stagge, Pascal and Ahlborg, Mandy and Buzug, Thorsten M. and Graeser, Matthias}, keywords = {buzugthorsten}, publisher = {International Journal on Magnetic Particle Imaging IJMPI}, title = {Simulation of a Modular Coil Unit for a Preclinical MPI Scanner}, year = 2024 }
Elmoujarkach, E., Seeger, S., Möller, N., Schmidt, C. and Rafecas, M.: Development and Characterization of 3D Printed Radioactive Phantoms for High Resolution PET, 1–2, 2022, DOI: 10.1109/NSS/MIC44845.2022.10399242.
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@inproceedings{10399242, abstract = {Nuclear imaging techniques such as Positron Emission Tomography (PET) and Single-Photon Emission Computed Tomography (SPECT) use radioactive phantoms for calibration, quality assurance, and characterization. These phantoms can be rods, flat sources, or cylinders that consist of cavities that are filled with liquid radioisotopes. The use of such phantoms is a well-established standard. With the advent of 3D printing, a promising alternative approach is to print solid radioactive phantoms. The literature shows that it is possible to manufacture solid calibration phantoms with short-lived radioisotopes. On the way to printing long-lived radioactive objects, we tested the method using 18F-FDG to construct very small phantoms with submillimeter structures for future use in small-fish PET. A commercial printer was modified for this purpose. We were able to print different phantom shapes and structures with homogeneous activity distributions as well as phantoms with hot, cold and background regions. The use of hollow phantoms of the same size, to be filled with activity, is not considered a practical alternative due to their small size. In addition, air bubbles that occur during filling can also reduce the quality.}, author = {Elmoujarkach, Ezzat and Seeger, Steven and Möller, Nadine and Schmidt, Christian and Rafecas, Magdalena}, booktitle = {2022 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)}, keywords = {ki-inspire}, month = 11, pages = {1-2}, title = {Development and Characterization of 3D Printed Radioactive Phantoms for High Resolution PET}, year = 2022 }
Bakenecker, A. C., Bente, K., Bachmann, F., von Gladiss, A., Faivre, D. and Buzug, T. M.: Selective actuation and MPI of magnetic beads, 2020.
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@inproceedings{bakenecker2020IWMPI, author = {Bakenecker, Anna C. and Bente, Klaas and Bachmann, Felix and von Gladiss, Anselm and Faivre, Damien and Buzug, Thorsten M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {buzugthorsten}, title = {Selective actuation and MPI of magnetic beads}, year = 2020 }
Chinchilla, C. J., Bakenecker, A. C. and Buzug, T. M.: Velocity simulations of a magnetically steered swimmer, 2020.
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@inproceedings{chinchilla2020BMT, author = {Chinchilla, Carlos J. and Bakenecker, Anna C. and Buzug, Thorsten M.}, booktitle = {Jahrestagung der Deutschen Gesellschaft für Biomedizinische Technik}, keywords = {buzugthorsten}, title = {Velocity simulations of a magnetically steered swimmer}, year = 2020 }
Stelzner, J., Weber, M. and Buzug, T. M.: A Receive Coil Topology Based on Oppositely Tilted Solenoids for a Predefined Drive Field, 81–82, 2018.
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@inproceedings{stelzner2018receive, author = {Stelzner, Jan and Weber, Matthias and Buzug, Thorsten M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {WeberMatthias}, pages = {81-82}, title = {A Receive Coil Topology Based on Oppositely Tilted Solenoids for a Predefined Drive Field}, year = 2018 }
Bakenecker, A., Friedrich, T., von Gladiss, A., Graeser, M., Stelzner, J. and Buzug, T. M.: Experimental Validation of the Selection Field of a Rabbit Sized FFL Scanner, 41, 2017.
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@inproceedings{bakenecker2017experimental, author = {Bakenecker, Anna and Friedrich, Thomas and von Gladiss, Anselm and Graeser, Matthias and Stelzner, Jan and Buzug, Thorsten M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {BakeneckerAnna}, pages = 41, title = {Experimental Validation of the Selection Field of a Rabbit Sized FFL Scanner}, year = 2017 }
Ulloa, P., Methot, V. and Koch, M. A.: Experimental study of bias in apparent exchange rate measurements, S173-S174, 2017, DOI: 10.1007/s10334-017-0633-0.
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@inproceedings{QS295-ullo17, author = {Ulloa, P. and Methot, V. and Koch, M. A.}, booktitle = {European Society for Magnetic Resonance in Medicine and Biology, 34th Annual Scientific Meeting, Barcelona, October 19–21, 2017}, journal = {Magnetic Resonance Materials in Physics, Biology and Medicine}, keywords = {UlloaPatricia}, note = {contribution no. 181}, number = {Suppl. 1}, pages = {S173–S174}, title = {Experimental study of bias in apparent exchange rate measurements}, volume = 30, year = 2017 }
Chen, X., Graeser, M., Behrends, A., von Gladiss, A. and Buzug, T. M.: First measured result of the 3D Magnetic Particle Spectrometer, 123, 2017.
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@inproceedings{chen2017first, abstract = {Magnetic Particle Imaging (MPI) is capable of imaging the spatial distribution of superparamagnetic iron oxide (SPIO) nanoparticles with a high sensitivity and high resolution. A Magnetic Particle Spectrometer (MPS) can be used to estimate the magnetic response of the SPIO nanoparticles and achieve the system matrix for the calibration of imaging devices. A one-dimensional and two-dimensional MPS have been introduced and shown good usability. A three-dimensional transmit coil setup was optimized, and its corresponding signal chains have been partially described. This paper is a continuation work and aims at presenting the first measured results of the three-dimensional MPS.}, author = {Chen, Xin and Graeser, Matthias and Behrends, André and von Gladiss, Anselm and Buzug, Thorsten M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, editor = {Sefc, Ludek and Buzug, Thorsten M. and Knopp, Tobias}, keywords = {MPS}, month = {03}, pages = 123, publisher = {Infinite Science Publishing}, title = {First measured result of the 3D Magnetic Particle Spectrometer}, year = 2017 }
Knopp, T., Kaethner, C., Ahlborg, M. and Buzug, T. M.: X-Space and Chebyshev Reconstruction in Magnetic Particle Imaging, 75, 2016.
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@inproceedings{knopp2016xspace, author = {Knopp, Tobias and Kaethner, Christian and Ahlborg, Mandy and Buzug, Thorsten M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {AhlborgMandy}, pages = 75, publisher = {Infinite Science Publishing}, title = {X-Space and Chebyshev Reconstruction in Magnetic Particle Imaging}, year = 2016 }
Ahlborg, M., Kaethner, C., Knopp, T., Szwargulski, P. and Buzug, T. M.: The Influence of Trajectory and System Matrix Overlap on Image Reconstruction Results in Magnetic Particle Imaging, 175, 2016.
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@inproceedings{ahlborg2016influence, author = {Ahlborg, Mandy and Kaethner, Christian and Knopp, Tobias and Szwargulski, Patryk and Buzug, Thorsten M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {AhlborgMandy}, pages = 175, publisher = {Infinite Science Publishing}, title = {The Influence of Trajectory and System Matrix Overlap on Image Reconstruction Results in Magnetic Particle Imaging}, year = 2016 }
Ulloa, P., Benedik, A., Landmesser, R. and Koch, M. A.: Water-in-oil Emulsion as a Simple Phantom for Validation of Double Diffusion Encoding MRI Sequences, S48-S49, 2016, DOI: 10.1007/s10334-016-0568-x.
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@inproceedings{ulloa2016waterinoil, address = {Berlin}, author = {Ulloa, Patricia and Benedik, Anastasia and Landmesser, Rabea and Koch, Martin A.}, booktitle = {33rd Annual Scientific Meeting European Society for Magnetic Resonance in Medicine and Biology, Sep 29 - Oct 1, 2016, Vienna}, journal = {Magnetic Resonance Materials in Physics, Biology and Medicine}, keywords = {UlloaPatricia}, number = {1 Supplement}, pages = {S48–S49}, publisher = {Springer}, title = {Water-in-oil Emulsion as a Simple Phantom for Validation of Double Diffusion Encoding MRI Sequences}, volume = 29, year = 2016 }
von Gladiss, A., Graeser, M., Ferguson, R. M., Khandhar, A. P., Kemp, S. J., Krishnan, K. M. and Buzug, T. M.: The Particle Response of Blended Nanoparticles in MPI, 115, 2016.
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@inproceedings{vongladisstobepublishedparticle, author = {von Gladiss, Anselm and Graeser, Matthias and Ferguson, R. Matthew and Khandhar, Amit P. and Kemp, Scott J. and Krishnan, Kannan M. and Buzug, Thorsten M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {MPS}, pages = 115, title = {The Particle Response of Blended Nanoparticles in MPI}, year = 2016 }
Cordes, A., Kaethner, C., Ahlborg, M. and Buzug, T. M.: X-space Deconvolution for Multidimensional Lissajous-based Data- Acquisition Schemes, 74, 2016.
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@inproceedings{cordes2016xspace, author = {Cordes, Aileen and Kaethner, Christian and Ahlborg, Mandy and Buzug, Thorsten M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {AhlborgMandy}, pages = 74, title = {X-space Deconvolution for Multidimensional Lissajous-based Data- Acquisition Schemes}, year = 2016 }
Maass, M., Bente, K., Ahlborg, M., Medimagh, H., Phan, H., Buzug, T. M. and Mertins, A.: Compression of FFP System Matrix with a Special Sampling Rate on the Lissajous Trajectory, 56, 2016.
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@inproceedings{maass2016compression, author = {Maass, Marco and Bente, Klaas and Ahlborg, Mandy and Medimagh, Hanne and Phan, Huy and Buzug, Thorsten M. and Mertins, Alfred}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {buzugthorsten}, pages = 56, publisher = {Infinite Science Publishing}, title = {Compression of FFP System Matrix with a Special Sampling Rate on the Lissajous Trajectory}, year = 2016 }
Grehn, M., Kurth, J., Stenzel, J. and Rafecas, M.: 3D Druck des NEMA NU 4-2008 Phantoms für die Kleintier-PET-Bildgebung – eine Vergleichsstudie mit verschiedenen Bildgebungsmodalitäten, 125–126, 2016.
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@inproceedings{grehn2016druck, author = {Grehn, M. and Kurth, J. and Stenzel, J. and Rafecas, M.}, booktitle = {47. Jahrestagung der Deutschen Gesellschaft für Medizinische Physik (DGMP) e. V. und 19. Jahrestagung der Deutschen Sektion der International Society for Magnetic Resonance in Medicine (ISMRM) e. V.}, editor = {Schreiber, L. M. and Hövener, J.-B.}, keywords = {IMT}, organization = {DGMP, ISMRM-DS}, pages = {125-126}, title = {3D Druck des NEMA NU 4-2008 Phantoms für die Kleintier-PET-Bildgebung – eine Vergleichsstudie mit verschiedenen Bildgebungsmodalitäten}, year = 2016 }
Bienzeisler, J., Lüdtke-Buzug, K. and Schemberg, J.: Magnetic Flow Field Separation of Superparamagnetic Dextran Coated Iron Oxide Nanoparticles, 2015, DOI: 10.1109/IWMPI.2015.7107063.
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@inproceedings{Bienzeisler2015a, author = {Bienzeisler, J. and Lüdtke-Buzug, K. and Schemberg, J.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {IMT}, title = {Magnetic Flow Field Separation of Superparamagnetic Dextran Coated Iron Oxide Nanoparticles}, year = 2015 }
Szwargulski, P., Rahmer, J., Ahlborg, M., Kaethner, C. and Buzug, T. M.: Experimental Evaluation of Different Weighting Schemes in Magnetic Particle Imaging Reconstruction, 2015, DOI: 10.1515/bmt-2015-5008.
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@inproceedings{Szwargulski2015d, author = {Szwargulski, P. and Rahmer, J. and Ahlborg, M. and Kaethner, C. and Buzug, T. M.}, booktitle = {Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung}, keywords = {AhlborgMandy}, title = {Experimental Evaluation of Different Weighting Schemes in Magnetic Particle Imaging Reconstruction}, volume = 60, year = 2015 }
Graeser, M., Ahlborg, M., Behrends, A., Bente, K., Bringout, G., Debbeler, C., v. Gladiß, A., Gräfe, K., Kaethner, C., Kaufmann, S., Lüdtke-Buzug, K., Medimagh, H., Stelzner, J., Weber, M. and Buzug, T. M.: A Device for Measureing the Trajectorey Dependent Magnetic Particle Performance for MPI, 2015, DOI: 10.1109/IWMPI.2015.7107078.
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@inproceedings{Graeser2015a, author = {Graeser, M. and Ahlborg, M. and Behrends, A. and Bente, K. and Bringout, G. and Debbeler, C. and {v. Gladiß}, A. and Gräfe, K. and Kaethner, C. and Kaufmann, S. and Lüdtke-Buzug, K. and Medimagh, H. and Stelzner, J. and Weber, M. and Buzug, T. M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {BringoutGael}, title = {A Device for Measureing the Trajectorey Dependent Magnetic Particle Performance for MPI}, year = 2015 }
Kaethner, C., Ahlborg, M. and Buzug, T.: Focus field based trajectory elongation in MPI, 2015, DOI: 10.1109/IWMPI.2015.7107019.
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@inproceedings{Kaethner2015c, abstract = {In Magnetic Particle Imaging (MPI), the data acquisition can be performed by steering a field-free point (FFP) through the field of view (FOV). When using drive fields to achieve the FFP movement, a fast spatial encoding of the FOV is enabled. Due to safety limits, in terms of patient heating and nerve stimulation, the amplitude of the applied currents needs to be small, which results in a small FOV. In order to enlarge the FOV, focus fields featuring a high amplitude and a low frequency can be used. In this contribution, an approach based on a linear focus field shift, which enlarges the FOV in axial direction, is proposed. Such a shift results in an elongation of a planar two-dimensional trajectory that features a controlled sub-sampling of the FOV.I Results show that a focus field based trajectory elongation in axial direction is a suitable data acquisition for MPI. In addition to this, the use of self-intersection points as trajectory specific axial distance measure has been proposed.}, author = {Kaethner, C. and Ahlborg, M. and Buzug, T.M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {AhlborgMandy}, month = {03}, title = {Focus field based trajectory elongation in MPI}, year = 2015 }
Ariyamitr, S. and Koch, M. A.: Analyzing the Impact of Different Path Termination Conditions in a Probabilistic Fiber Tracking Algorithm, 2015.
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@inproceedings{Ariyamitr2015a, author = {Ariyamitr, Schonlatis and Koch, Martin A.}, booktitle = {Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung}, keywords = {IMT}, title = {Analyzing the Impact of Different Path Termination Conditions in a Probabilistic Fiber Tracking Algorithm}, year = 2015 }
Debbeler, C., Müller, J. and Lüdtke-Buzug, K.: Characterization of Superparamagnetic Nanoparticles using a Micro-CT Phantom Estimation of Iron Concentration in Ferrofluids, 2014, DOI: 10.1515/bmt-2014-5008.
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@inproceedings{Debbeler2014c, author = {Debbeler, Christina and Müller, Jan and Lüdtke-Buzug, Kerstin}, booktitle = {Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung}, keywords = {ConcentrationMeasurement}, title = {Characterization of Superparamagnetic Nanoparticles using a Micro-CT Phantom Estimation of Iron Concentration in Ferrofluids}, year = 2014 }
Graeser, M., Sattel, T. F. and Buzug, T. M.: Construction of a multi-dimensional transmit field generator and receive coil setup, 94–95, 2014.
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@inproceedings{Graeser2014a, author = {Graeser, M. and Sattel, T. F. and Buzug, T. M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {IMT}, pages = {94-95}, title = {Construction of a multi-dimensional transmit field generator and receive coil setup}, year = 2014 }
Ulloa, P., Wottschel, V. and Koch, M. A.: Extracellular Space Contribution to the Double Wave Vector Diffusion-Weighted Signal, s568, 2014, DOI: 10.1515/bmt-2014-5008.
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@inproceedings{Ulloa2014a, author = {Ulloa, Patricia and Wottschel, Viktor and Koch, Martin A.}, booktitle = {Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung}, keywords = {UlloaPatricia}, number = {s1}, pages = {s568}, title = {Extracellular Space Contribution to the Double Wave Vector Diffusion-Weighted Signal}, volume = 59, year = 2014 }
Timmermeyer, A., Wojtczyk, H., Tenner, W., Bringout, G., Grüttner, M., Graeser, M., Sattel, T. F., Halkola, A. and Buzug, T. M.: Super-resolution approach in magnetic particle imaging – Evaluation of effectiveness at various noise levels, 2013.
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@inproceedings{Timmermeyer2013b, author = {Timmermeyer, Anja and Wojtczyk, Hanne and Tenner, Wiebke and Bringout, Gael and Grüttner, Mandy and Graeser, Matthias and Sattel, Timo F. and Halkola, Aleksi and Buzug, Thorsten M.}, booktitle = {Proceedings der 44. Jahrestagung der Deutschen Gesellschaft für Medizinische Physik}, editor = {Treuer, Harald}, keywords = {BringoutGael}, title = {Super-resolution approach in magnetic particle imaging – Evaluation of effectiveness at various noise levels}, year = 2013 }
Mrongowius, J., Gräfe, K. and Buzug, T. M.: Simulation Study of a Single-Sided Magnetic Particle Imaging Device, 2013, DOI: 10.1515/bmt-2013-4285.
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@inproceedings{Mrongowius2013a, author = {Mrongowius, Julia and Gräfe, Ksenija and Buzug, Thorsten M.}, booktitle = {Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung}, keywords = {IMT}, title = {Simulation Study of a Single-Sided Magnetic Particle Imaging Device}, volume = 58, year = 2013 }
Grüttner, M., Sattel, T., Bringout, G., Graeser, M., Tenner, W., Wojtczyk, H. and Buzug, T.: Truncation artifacts in Magnetic Particle Imaging, 2013, DOI: 10.1109/IWMPI.2013.6528335.
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@inproceedings{Gruettner2013b, abstract = {Figure 1 clearly shows the effect of truncation artifacts when particles are not covered by the trajectory. With the removal of edge pixels these artifacts disappear. However, some information of the image is lost depending on the size of the necessary cut-off. With the multi-resolution approach the full information is used. Instead of removing pixels they are combined to large pixels. This method results in a better quality with small cut-offs compared to the non-compensated images.}, author = {Grüttner, M. and Sattel, T.F. and Bringout, G. and Graeser, M. and Tenner, W. and Wojtczyk, H. and Buzug, T.M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {BringoutGael}, month = {03}, title = {Truncation artifacts in Magnetic Particle Imaging}, year = 2013 }
Bringout, G., Wojtczyk, H., Tenner, W., Graeser, M., Grüttner, M., Haegele, J., Duschka, R., Panagiotopoulos, N., Vogt, F., Barkhausen, J. and Buzug, T.: A high power driving and selection field coil for an open MPI scanner, 2013, DOI: 10.1109/IWMPI.2013.6528332.
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@inproceedings{Bringout2013a, abstract = {Three Litz wires have been used in parallel in order to decrease the layer to layer voltage down to 4 kV and the coil voltage down to 8 kV. A two millimeter thick epoxy plate has been glued between each layer, in order to prevent any electrical breakdown between the layers. A special epoxy has been used to minimize the inner temperature of the coil, which reached 180°C with a dissipated power of 5.2 kW. The use of parallel Litz wire leads to currents having different phase angle in every wire which has to be corrected.}, author = {Bringout, G. and Wojtczyk, H. and Tenner, W. and Graeser, M. and Grüttner, M. and Haegele, J. and Duschka, R. and Panagiotopoulos, N. and Vogt, F.M. and Barkhausen, J. and Buzug, T.M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {BringoutGael}, month = {03}, title = {A high power driving and selection field coil for an open MPI scanner}, year = 2013 }
Finas, D., Baumann, K., Sydow, L., Heinrich, K., Gräfe, K., Rody, A., Lüdtke-Buzug, K. and Buzug, T.: Superparamagnetic nanoparticles in lymphatic tissue - Detection and distribution in a breast cancer model for magnetic particle imaging, 2013, DOI: 10.1109/IWMPI.2013.6528390.
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@inproceedings{Finas2013a, abstract = {The SPIOs are moving from the injection site through the lymph-fat tissue to the axillary region and finally into the axillary lymph nodes. SPIOs follows the traces of lymphatic vessels, respecting the borders and spaces between different tissues. They were found in the neighborhood of collagen fibers and accumulates in distinct regions. We present first results of the approach of SNLB with MPI.}, author = {Finas, D. and Baumann, K. and Sydow, L. and Heinrich, K. and Gräfe, K. and Rody, A. and Lüdtke-Buzug, K. and Buzug, T.M.}, booktitle = {International Workshop on Magnetic Particle Imaging}, keywords = {IMT}, month = {03}, title = {Superparamagnetic nanoparticles in lymphatic tissue - Detection and distribution in a breast cancer model for magnetic particle imaging}, year = 2013 }
Oberle, A. and Lüdtke-Buzug, K.: Stability Analysis Of Superparamagnetic Iron Oxide Nanoparticles (Spions) At 37 °C, 2013, DOI: 10.1515/bmt-2013-4099.
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@inproceedings{Oberle2013a, author = {Oberle, A. and Lüdtke-Buzug, K.}, booktitle = {Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung}, keywords = {IMT}, title = {Stability Analysis Of Superparamagnetic Iron Oxide Nanoparticles (Spions) At 37 °C}, volume = 58, year = 2013 }
Weber, M., Erbe, M., Bente, K., Sattel, T. and Buzug, T.: Scanner Construction for a Dynamic Field Free Line in Magnetic Particle Imaging, 2013, DOI: 10.1515/bmt-2013-4259.
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@inproceedings{Weber2013b, author = {Weber, M. and Erbe, M. and Bente, K. and Sattel, T.F. and Buzug, T.M.}, booktitle = {Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung}, keywords = {WeberMatthias}, title = {Scanner Construction for a Dynamic Field Free Line in Magnetic Particle Imaging}, volume = 58, year = 2013 }
Gräfe, K., Grüttner, M., Sattel, T. F., Graeser, M. and Buzug, T. M.: Single-sided magnetic particle imaging: magnetic field and gradient, 867219, 2013, DOI: 10.1117/12.2001610.
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@inproceedings{Graefe2013a, author = {Gräfe, K. and Grüttner, M. and Sattel, T. F. and Graeser, M. and Buzug, T. M.}, booktitle = {SPIE Medical Imaging}, editor = {Weaver, John B. and Molthen, Robert C.}, keywords = {AhlborgMandy}, month = {03}, pages = 867219, publisher = {{SPIE}-Intl Soc Optical Eng}, title = {Single-sided magnetic particle imaging: magnetic field and gradient}, year = 2013 }
Schneider, D. and Lüdtke-Buzug, K.: Biomaterials for Regenerative Medicine: Cytotoxicity of Superparamagnetic Iron Oxide Nanoparticles in Stem Cells, 117–122, 2012, DOI: 10.1007/978-3-642-24133-8_19.
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@inproceedings{Schneider2012a, author = {Schneider, D. and Lüdtke-Buzug, K.}, booktitle = {Springer Proceedings in Physics}, editor = {Buzug, Thorsten M. and Borgert, Jörn}, keywords = {IMT}, pages = {117-122}, publisher = {Springer Berlin Heidelberg}, series = {Springer Proceedings in Physics}, title = {Biomaterials for Regenerative Medicine: Cytotoxicity of Superparamagnetic Iron Oxide Nanoparticles in Stem Cells}, volume = 140, year = 2012 }
Erbe, M., Sattel, T. and Buzug, T.: Commercialization of a magnetic particle spectrometer, 1–4, 2012, DOI: 10.1109/NANO.2012.6321939.
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@inproceedings{Erbe2012c, abstract = {In this contribution the commercialization process of a magnetic particle spectrometer (MPS) for the industrial application is described. The MPS is a tool to characterize magnetic nanoparticles in only seconds. It provides information about the dynamic magnetization behavior as well as the particles' core size distribution. After having implemented a functional model MPS the development of a prototype MPS, which will then be launched for the market, is described. Furthermore, the process of building up a spin-off company is discussed. This project is funded by the Federal Ministry of Economics and Technology via the EXIST Forschungstransfer.}, author = {Erbe, M. and Sattel, T.F. and Buzug, T.M.}, booktitle = {IEEE Conference on Nanotechnology}, keywords = {IMT}, month = {08}, pages = {1-4}, title = {Commercialization of a magnetic particle spectrometer}, year = 2012 }
Grüttner, M., Sattel, T., Graeser, M., Wojtczyk, H., Bringout, G., Tenner, W. and Buzug, T.: Enlarging the Field of View in Magnetic Particle Imaging – A Comparison, 249–253, 2012, DOI: 10.1007/978-3-642-24133-8_40.
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@inproceedings{Gruettner2012a, author = {Grüttner, M. and Sattel, T.F. and Graeser, M. and Wojtczyk, H. and Bringout, G. and Tenner, W. and Buzug, T.M.}, booktitle = {Springer Proceedings in Physics}, editor = {Buzug, Thorsten M. and Borgert, Jörn}, keywords = {BringoutGael}, pages = {249-253}, publisher = {Springer Berlin Heidelberg}, series = {Springer Proceedings in Physics}, title = {Enlarging the Field of View in Magnetic Particle Imaging – A Comparison}, volume = 140, year = 2012 }
Haegele, J., Rahmer, J., Gleich, B., Bontus, C., Borgert, J., Wojtczyk, H., Buzug, T., Barkhausen, J. and Vogt, F.: Visualization of Instruments for Cardiovascular Intervention Using MPI, 211–215, 2012, DOI: 10.1007/978-3-642-24133-8_34.
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@inproceedings{Haegele2012d, author = {Haegele, Julian and Rahmer, Jürgen and Gleich, Bernhard and Bontus, Claas and Borgert, Jörn and Wojtczyk, Hanne and Buzug, ThorstenM. and Barkhausen, Jörg and Vogt, FlorianM.}, booktitle = {Magnetic Particle Imaging}, editor = {Buzug, Thorsten M. and Borgert, Jörn}, keywords = {MedimaghHanne}, pages = {211-215}, publisher = {Springer Berlin Heidelberg}, series = {Springer Proceedings in Physics}, title = {Visualization of Instruments for Cardiovascular Intervention Using MPI}, volume = 140, year = 2012 }
S.T., G., Simon, M., Bischof, A., Barkhausen, J. and Buzug, T.: Towards Segmentation of the Upper Abdomen using a Multi-Object Active Shape Model, 466, 2012, DOI: 10.1515/bmt-2012-4096.
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@inproceedings{Gollmer:2012d, author = {S.T., Gollmer. and Simon, M. and Bischof, A. and Barkhausen, J. and Buzug, T.M.}, booktitle = {Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung}, keywords = {IMT}, pages = 466, title = {Towards Segmentation of the Upper Abdomen using a Multi-Object Active Shape Model}, volume = 57, year = 2012 }
Duschka, R., Wojtczyk, H., Panagiotopoulos, N., Hägele, J., Bringout, G., Rahmer, J., Bontus, C., Buzug, T., Borgert, J., Barkhausen, J. and Vogt, F.: Magnetic Particle Imaging ({MPI}) meets Katheter und Co. textendash Temperaturmessungen interventioneller Materialen im Wechselmagnetfeld, 2012, DOI: 10.1055/s-0032-1329771.
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@inproceedings{Duschka_2012, author = {Duschka, RL and Wojtczyk, H and Panagiotopoulos, N and Hägele, J and Bringout, G and Rahmer, J and Bontus, C and Buzug, TM and Borgert, J and Barkhausen, J and Vogt, FM}, booktitle = {RöFo: Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren}, keywords = {BringoutGael}, month = 11, number = 12, publisher = {Thieme Publishing Group}, title = {Magnetic Particle Imaging ({MPI}) meets Katheter und Co. {\textendash} Temperaturmessungen interventioneller Materialen im Wechselmagnetfeld}, volume = 184, year = 2012 }
Cordes, A., Levakhina, Y. and Buzug, T.: A Method for Validation and Evaluation of Digital Tomosynthesis Reconstruction, 513, 2012, DOI: 10.1515/bmt-2012-4320.
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@inproceedings{Cordes2012b, author = {Cordes, A. and Levakhina, Y.M. and Buzug, T.M.}, booktitle = {Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung}, keywords = {IMT}, pages = 513, title = {A Method for Validation and Evaluation of Digital Tomosynthesis Reconstruction}, volume = 57, year = 2012 }
Sattel, T. F., Erbe, M. and Buzug, T. M.: Optimization of Circular Current Distributions for Magnetic Field Generation in MPI: A Comparison of the Selection Field Coil and the Drive Field Coil Geometry, 313–318, 2012, DOI: 10.1007/978-3-642-24133-8_50.
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@inproceedings{Sattel2012b, author = {Sattel, Timo F. and Erbe, Marlitt and Buzug, Thorsten M.}, booktitle = {Springer Proceedings in Physics}, editor = {Buzug, Thorsten M. and Borgert, Jörn}, keywords = {IMT}, pages = {313-318}, publisher = {Springer Berlin Heidelberg}, series = {Springer Proceedings in Physics}, title = {Optimization of Circular Current Distributions for Magnetic Field Generation in MPI: A Comparison of the Selection Field Coil and the Drive Field Coil Geometry}, volume = 140, year = 2012 }
Toma, A., Holl-Ulrich, K., Becker, S., Mang, A., Schütz, T., Bonsanto, M., Tronnier, V. and Buzug, T.: A Mathematical Model to Simulate Glioma Growth and Radiotherapy at the Microscopic Level, 218–221, 2012, DOI: 10.1515/bmt-2012-4081.
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@inproceedings{Toma:2012d, author = {Toma, A. and Holl-Ulrich, K. and Becker, S. and Mang, A. and Schütz, T.A. and Bonsanto, M.M. and Tronnier, V. and Buzug, T.M.}, booktitle = {Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung}, keywords = {BeckerStefan}, pages = {218-221}, title = {A Mathematical Model to Simulate Glioma Growth and Radiotherapy at the Microscopic Level}, volume = 57, year = 2012 }
Duschka, R., Bischoff, P., May, K., Levakhina, Y., Buzug, T., Kovacs, A., Hunold, P., Barkhausen, J. and Vogt, F.: Digitale Tomosynthese - Ein neues Verfahren zur Beurteilung degenerativer Gelenkveränderungen im Vergleich zum konventionellen Röntgen, VO216_4, 2012, DOI: 10.1055/s-0032-1311150.
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@inproceedings{duschka2012digitale, author = {Duschka, RL and Bischoff, P and May, K and Levakhina, Y and Buzug, TM and Kovacs, A and Hunold, P and Barkhausen, J and Vogt, FM}, booktitle = {RöFo: Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren}, keywords = {MetalArtefactReduction}, month = {04}, pages = {VO216_4}, publisher = {Thieme Publishing Group}, title = {Digitale Tomosynthese - Ein neues Verfahren zur Beurteilung degenerativer Gelenkveränderungen im Vergleich zum konventionellen Röntgen}, volume = 184, year = 2012 }
Mang, A., Schütz, T. A., Toma, A., Becker, S. and Buzug, T. M.: Ein dämonenartiger Ansatz zur Modellierung tumorinduzierter Gewebedeformation als Prior für die nicht-rigide Bildregistrierung, 422–427, 2012, DOI: 10.1007/978-3-642-28502-8_73.
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@inproceedings{Mang:2012a, author = {Mang, A. and Schütz, T. A. and Toma, A. and Becker, S. and Buzug, T. M.}, booktitle = {Bildverarbeitung für die Medizin}, editor = {Tolxdorff, Thomas and Deserno, Thomas Martin and Handels, Heinz and Meinzer, Hans-Peter}, keywords = {BeckerStefan}, pages = {422-427}, publisher = {Springer Berlin Heidelberg}, series = {Informatik aktuell}, title = {Ein dämonenartiger Ansatz zur Modellierung tumorinduzierter Gewebedeformation als Prior für die nicht-rigide Bildregistrierung}, year = 2012 }
Kleine, M., Müller, J. and Buzug, T. M.: L1-Regularisierung für die Computertomographie mit begrenztem Aufnahmewinkel, 147–152, 2012, DOI: 10.1007/978-3-642-28502-8_27.
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@inproceedings{Kleine2012a, author = {Kleine, Matthias and Müller, Jan and Buzug, Thorsten M.}, booktitle = {Bildverarbeitung für die Medizin}, editor = {Tolxdorff, Thomas and Deserno, Thomas Martin and Handels, Heinz and Meinzer, Hans-Peter}, keywords = {MetalArtefactReduction}, pages = {147-152}, publisher = {Springer Berlin Heidelberg}, series = {Informatik aktuell}, title = {L1-Regularisierung für die Computertomographie mit begrenztem Aufnahmewinkel}, year = 2012 }
Toma, A., Régnier-Vigouroux, A., Mang, A., Becker, S., Schuetz, T. A. and Buzug, T. M.: In-silico modelling of tumour-immune system interactions for glioblastomas, 2012, DOI: 10.3182/20120215-3-at-3016.00219.
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@inproceedings{Toma:2012b, author = {Toma, Alina and Régnier-Vigouroux, A. and Mang, A. and Becker, S. and Schuetz, T. A. and Buzug, T. M.}, booktitle = {International Conference on Mathematical Modelling}, editor = {Troch, Inge}, keywords = {BeckerStefan}, month = {02}, publisher = {Elsevier {BV}}, title = {In-silico modelling of tumour-immune system interactions for glioblastomas}, year = 2012 }
Heye, A., Becker, S., Mang, A., Schütz, T., Toma, A. and Buzug, T.: Ein kontinuierlicher Ansatz zur Modellierung von Tumorwachstum und Strahlentherapie, 384–388, 2011, DOI: 10.1007/978-3-642-19335-4_79.
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@inproceedings{Heye:2011a, author = {Heye, A. and Becker, S. and Mang, A. and Schütz, T.A. and Toma, A. and Buzug, T.M.}, booktitle = {Bildverarbeitung für die Medizin}, editor = {Handels, Heinz and Ehrhardt, Jan and Deserno, Thomas M. and Meinzer, Hans-Peter and Tolxdorff, Thomas}, keywords = {BeckerStefan}, pages = {384-388}, publisher = {Springer Berlin Heidelberg}, series = {Informatik aktuell}, title = {Ein kontinuierlicher Ansatz zur Modellierung von Tumorwachstum und Strahlentherapie}, year = 2011 }
Toma, A., Mang, A., Schuetz, T. A., Becker, S. and Buzug, T. M.: Is it Necessary to Model the Matrix Degrading Enzymes for Simulating Tumour Growth?, 361–368, 2011, DOI: 10.2312/PE/VMV/VMV11/361-368.
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@inproceedings{Toma:2011e, author = {Toma, A. and Mang, A. and Schuetz, T. A. and Becker, S. and Buzug, T. M.}, booktitle = {Vision, Modeling and Visualization}, keywords = {BeckerStefan}, pages = {361-368}, title = {Is it Necessary to Model the Matrix Degrading Enzymes for Simulating Tumour Growth?}, year = 2011 }
Buzug, T. M., Sattel, T. F., Erbe, M., Biederer, S., Finas, D., Diedrich, K., Vogt, F. M., Barkhausen, J., Lüdtke-Buzug, K. and Knopp, T.: Novel hardware developments in magnetic particle imaging, 2011, DOI: 10.1117/12.877158.
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@inproceedings{Buzug_2011, author = {Buzug, T. M. and Sattel, T. F. and Erbe, M. and Biederer, S. and Finas, D. and Diedrich, K. and Vogt, F. M. and Barkhausen, J. and Lüdtke-Buzug, K. and Knopp, T.}, booktitle = {SPIE Medical Imaging}, editor = {Weaver, John B. and Molthen, Robert C.}, keywords = {IMT}, month = {03}, publisher = {{SPIE}-Intl Soc Optical Eng}, title = {Novel hardware developments in magnetic particle imaging}, year = 2011 }
Buzug, T. M., Sattel, T. F., Erbe, M., Biederer, S., Graeser, M., Grüttner, M., Tenner, W., Wojtczyk, H., Borgert, J., Finas, D., Dietrich, K., Vogt, F. M., Barkhausen, J., Lüdtke-Buzug, K. and Knopp, T.: Magnetic Particle Imaging: Novel Field Generating Devices for Optimized Imaging, 2011.
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@inproceedings{Buzug2011b, author = {Buzug, T. M. and Sattel, T. F. and Erbe, M. and Biederer, S. and Graeser, M. and Grüttner, M. and Tenner, W. and Wojtczyk, H. and Borgert, J. and Finas, D. and Dietrich, K. and Vogt, F. M. and Barkhausen, J. and Lüdtke-Buzug, K. and Knopp, T.}, journal = {Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung}, keywords = {AhlborgMandy}, number = {Suppl. 1}, title = {Magnetic Particle Imaging: Novel Field Generating Devices for Optimized Imaging}, volume = 56, year = 2011 }
Grüttner, M., Graeser, M., Biederer, S., Sattel, T., Wojtczyk, H., Tenner, W., Knopp, T., Gleich, B., Borgert, J. and Buzug, T.: 1D-image reconstruction for magnetic particle imaging using a hybrid system function, 2545–2548, 2011, DOI: 10.1109/NSSMIC.2011.6152687.
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@inproceedings{Gruettner2011, abstract = {Magnetic Particle Imaging is a promising imaging technique using iron-oxide nanoparticle tracers. The spatial distribution of these particles can be determined by solving a system of linear equations. This reconstruction is based on a system function that either has to be measured or can be calculated with given information about scanner topology and particle characteristics. This paper introduces a new approach combining both possibilities. A Magnetic Particle Spectrometer is used to obtain a hybrid system function. Furthermore, we will show that the hybrid system function can be successfully used for 1D-image reconstruction and potentially is an alternative to the measurement-based system function.}, author = {Grüttner, M. and Graeser, M. and Biederer, S. and Sattel, T.F. and Wojtczyk, H. and Tenner, W. and Knopp, T. and Gleich, B. and Borgert, J. and Buzug, T.M.}, booktitle = {Nuclear Science Symposium and Medical Imaging Conference}, keywords = {AhlborgMandy}, month = 10, pages = {2545-2548}, title = {1D-image reconstruction for magnetic particle imaging using a hybrid system function}, year = 2011 }
Toma, A., Pfenning, P., Mang, A., Schuetz, T. A., Becker, S., Wick, W. and Buzug, T. M.: Concentration Driven Invasion Velocity of Tumor Cells, 246, 2011.
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@inproceedings{Toma:2011f, author = {Toma, A. and Pfenning, P.N. and Mang, A. and Schuetz, T. A. and Becker, S. and Wick, W. and Buzug, T. M.}, booktitle = {International Conference on Systems Biology}, keywords = {BeckerStefan}, pages = 246, title = {Concentration Driven Invasion Velocity of Tumor Cells}, volume = {PS468}, year = 2011 }
Graeser, M., Biederer, S., Grüttner, M., Wojtczyk, H., Tenner, W., Sattel, T. F., Gleich, B., Borgert, J. and Buzug, T. M.: Determination of a 1D-MPI-System-Function using a Magnetic Particle Spectroscope, 2011.
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@inproceedings{Graeser2011a, author = {Graeser, M. and Biederer, S. and Grüttner, M. and Wojtczyk, H. and Tenner, W. and Sattel, T. F. and Gleich, B. and Borgert, J. and Buzug, T. M.}, booktitle = {Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung}, journal = {Biomed Tech}, keywords = {AhlborgMandy}, number = {Suppl. 1}, title = {Determination of a 1D-MPI-System-Function using a Magnetic Particle Spectroscope}, volume = 56, year = 2011 }
Kalapis, U. and Lüdtke-Buzug, K.: Magnetic Methods for Separation and Purification of Superparamagnetic Iron Oxide Nanoparticles, 2011.
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@inproceedings{Lüdtke-Buzug2011b, author = {Kalapis, U. and Lüdtke-Buzug, K.}, booktitle = {Deutsche Gesellschaft für Biomedizinische Technik Jahrestagung}, journal = {Biomedizinische Technik / Biomedical Engineering}, keywords = {IMT}, number = {Suppl. 1}, title = {Magnetic Methods for Separation and Purification of Superparamagnetic Iron Oxide Nanoparticles}, volume = 56, year = 2011 }
Müller, J., Vrtiska, T., Schmidt, B., Howe, B., McCollough, C., Buzug, T. M., Petersilka, M. and Eusemann, C.: The impact of dual energy CT on pseudo enhancement of kidney lesions, 76223I, 2010, DOI: 10.1117/12.844232.
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@inproceedings{Mueller2010a, author = {Müller, Jan and Vrtiska, Terri and Schmidt, Bernhard and Howe, Ben and McCollough, Cynthia and Buzug, Thorsten M. and Petersilka, Martin and Eusemann, Christian}, booktitle = {SPIE Medical Imaging}, editor = {Samei, Ehsan and Pelc, Norbert J.}, keywords = {IMT}, month = {03}, pages = {76223I}, publisher = {{SPIE}-Intl Soc Optical Eng}, title = {The impact of dual energy {CT} on pseudo enhancement of kidney lesions}, year = 2010 }
Vogt, F., Biederer, S., Simon, M., Lüdtke-Buzug, K., Knopp, T., Sattel, T., Buzug, T. and Barkhausen, J.: Magnetic Particle Imaging: Evaluation unterschiedlicher superparamagnetischer Eisenoxidpartikel für ein neues bildgebendes Verfahren, 2010, DOI: 10.1055/s-0030-1268342.
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@inproceedings{Vogt2010b, author = {Vogt, FM and Biederer, S and Simon, M and Lüdtke-Buzug, K and Knopp, T and Sattel, TF and Buzug, TM and Barkhausen, J}, booktitle = {RöFo: Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren}, keywords = {IMT}, month = 11, number = 11, publisher = {Thieme Publishing Group}, title = {Magnetic Particle Imaging: Evaluation unterschiedlicher superparamagnetischer Eisenoxidpartikel für ein neues bildgebendes Verfahren}, volume = 182, year = 2010 }
Ens, S., Ulrici, J., Hell, E. and Buzug, T.: Automatic motion correction in cone-beam computed tomography, 3248–3251, 2010, DOI: 10.1109/NSSMIC.2010.5874405.
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@inproceedings{Ens:2010c, abstract = {Motion correction is an important task in computed tomography. Small movements lead to a reduced resolution of the reconstructed images; strong movements may lead to a false diagnosis. Thus, motion detection and subsequent correction are necessary. In this work, we propose an algorithm for the automatic estimation of movement positions and motion correction by the simultaneous estimation of motion parameters and the determination of the corrected reconstruction. Distance metric values, computed from two successive projection images, provide information of the incorporation of movement. Reconstruction correction is achieved by minimization of an image quality function. Two no-reference image metrics show sufficient correlation with the amount of motion artifacts: entropy and bandpass-metric. The aim of the optimization method is to find a pair of image and motion parameters by minimization of the metric. However, the described method for the estimation of movement positions can also be used as a pre-processing step of the data-driven motion-correction (DDMC), a recently published motion correction method, for subdivision of the projection data into motion free subsections. Since the proposed method uses the Feldkamp algorithm (FDK) for reconstruction, we expect a shorter computation time then for the iterative reconstruction based DDMC. The proposed method works solely on information contained in cone-beam projections.}, author = {Ens, S. and Ulrici, J. and Hell, E. and Buzug, T.M.}, booktitle = {Nuclear Science Symposium and Medical Image Conference}, keywords = {IMT}, month = 10, pages = {3248-3251}, title = {Automatic motion correction in cone-beam computed tomography}, year = 2010 }
Biederer, S., Knopp, T., Sattel, T., Lüdtke-Buzug, K., Gleich, B., Weizenecker, J., Borgert, J. and Buzug, T.: Estimation of Magnetic Nanoparticle Diameter with a Magnetic Particle Spectrometer, 61–64, 2009, DOI: 10.1007/978-3-642-03887-7_17.
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@inproceedings{Biederer2009a, author = {Biederer, S. and Knopp, T. and Sattel, T.F. and Lüdtke-Buzug, K. and Gleich, B. and Weizenecker, J. and Borgert, J. and Buzug, T.M.}, booktitle = {World Congress on Medical Physics and Biomedical Engineering}, editor = {Dössel, Olaf and Schlegel, WolfgangC.}, keywords = {MPS}, pages = {61-64}, publisher = {Springer Berlin Heidelberg}, series = {IFMBE Proceedings}, title = {Estimation of Magnetic Nanoparticle Diameter with a Magnetic Particle Spectrometer}, volume = {25/8}, year = 2009 }
Ruhland, B., Baumann, K., Knopp, T., Sattel, T., Biederer, S., Lüdtke-Buzug, K., Buzug, T., Diedrich, K. and Finas, D.: Magnetic Particle Imaging durch Superparamagnetische Nanopartikel zur Sentinellymphknotendetektion beim Mammakarzinom, A096, 2009, DOI: 10.1055/s-0029-1239012.
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@inproceedings{Ruhland2009a, author = {Ruhland, B and Baumann, K and Knopp, T and Sattel, T and Biederer, S and Lüdtke-Buzug, K and Buzug, T and Diedrich, K and Finas, D}, booktitle = {Geburtshilfe und Frauenheilkunde}, keywords = {IMT}, month = {08}, pages = {A096}, publisher = {Thieme Publishing Group}, title = {Magnetic Particle Imaging durch Superparamagnetische Nanopartikel zur Sentinellymphknotendetektion beim Mammakarzinom}, volume = 69, year = 2009 }
Roehl, E. and Buzug, T.: Surgical Microscope with Automated Focus Adaptation, 110–113, 2009, DOI: 10.1007/978-3-642-03906-5_30.
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@inproceedings{Roehl2009a, author = {Roehl, E. and Buzug, T.M.}, booktitle = {World Congress on Medical Physics and Biomedical Engineering}, editor = {Dössel, Olaf and Schlegel, WolfgangC.}, keywords = {IMT}, pages = {110-113}, publisher = {Springer Berlin Heidelberg}, series = {IFMBE Proceedings}, title = {Surgical Microscope with Automated Focus Adaptation}, volume = {25/6}, year = 2009 }
Knopp, T., Sattel, T., Biederer, S., Weizenecker, J., Gleich, B., Borgert, J. and Buzug, T.: Trajektoriendichte bei Magnetic Particle Imaging, 71–75, 2009, DOI: 10.1007/978-3-540-93860-6_15.
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@inproceedings{Knopp2009b, author = {Knopp, Tobias and Sattel, Timo and Biederer, Sven and Weizenecker, Jürgen and Gleich, Bernhard and Borgert, Jörn and Buzug, ThorstenM.}, booktitle = {Bildverarbeitung für die Medizin}, editor = {Meinzer, Hans-Peter and Deserno, ThomasMartin and Handels, Heinz and Tolxdorff, Thomas}, keywords = {IMT}, pages = {71-75}, publisher = {Springer Berlin Heidelberg}, series = {Informatik aktuell}, title = {Trajektoriendichte bei Magnetic Particle Imaging}, year = 2009 }
Mang, A., Schnabel, J. A., Crum, W. R., Camara-Rey, O., Buzug, T. M. and Hawkes, D. J.: Consistency analysis of parametric registration in serial MR imaging studies of tumour disease progression, 409–410, 2008.
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@inproceedings{Mang2008b, author = {Mang, A. and Schnabel, J. A. and Crum, W. R. and Camara-Rey, O. and Buzug, T. M. and Hawkes, D. J.}, booktitle = {Computer Assisted Radiology and Surgery}, keywords = {IMT}, number = 1, pages = {409-410}, title = {Consistency analysis of parametric registration in serial MR imaging studies of tumour disease progression}, volume = 3, year = 2008 }
Kratz, B., Knopp, T., Oehler, M., Ens, S. and Buzug, T.: CT-MAR Reconstruction Using Non-Uniform Fourier Transform, 861–865, 2008, DOI: 10.1007/978-3-540-89208-3_206.
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@inproceedings{Kratz2008a, author = {Kratz, Bärbel and Knopp, T. and Oehler, M. and Ens, S. and Buzug, T.M.}, booktitle = {European Conference of the International Federation for Medical and Biological Engineering}, editor = {Vander Sloten, Jos and Verdonck, Pascal and Nyssen, Marc and Haueisen, Jens}, keywords = {MetalArtefactReduction}, pages = {861-865}, publisher = {Springer Berlin Heidelberg}, series = {IFMBE Proceedings}, title = {CT-MAR Reconstruction Using Non-Uniform Fourier Transform}, volume = 22, year = 2008 }
Oehler, M., Kratz, B., Knopp, T., Müller, J. and Buzug, T. M.: Evaluation of surrogate data quality in sinogram-based CT metal-artifact reduction, 1–10, 2008, DOI: 10.1117/12.793622.
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@inproceedings{Oehler2008, author = {Oehler, May and Kratz, Bärbel and Knopp, Tobias and Müller, Jan and Buzug, Thorsten M.}, booktitle = {Image Reconstruction from Incomplete Data}, editor = {Bones, Philip J. and Fiddy, Michael A. and Millane, Rick P.}, keywords = {MetalArtefactReduction}, month = {08}, pages = {1-10}, publisher = {{SPIE}-Intl Soc Optical Eng}, title = {Evaluation of surrogate data quality in sinogram-based {CT} metal-artifact reduction}, year = 2008 }
Gramer, M., Bohlken, W., Lundt, B., Pralow, T. and Buzug, T.: An Algorithm for Automatic Stitching of CR X-ray Images, 193–198, 2007, DOI: 10.1007/978-3-540-68764-1_32.
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@inproceedings{Gramer2007, author = {Gramer, Markus and Bohlken, Wilfried and Lundt, Bernd and Pralow, Thomas and Buzug, ThorstenM.}, booktitle = {Springer Proceedings in Physics}, editor = {Buzug, ThorstenM. and Holz, Dietrich and Bongartz, Jens and Kohl-Bareis, Matthias and Hartmann, Ulrich and Weber, Simone}, keywords = {IMT}, pages = {193-198}, publisher = {Springer Berlin Heidelberg}, series = {Springer Proceedings in Physics}, title = {An Algorithm for Automatic Stitching of CR X-ray Images}, volume = 114, year = 2007 }
Mang, A., Crum, W. R., Camara-Rey, O., Schnabel, J. A., Penney, G. P., Brasil-Caseiras, G., Buzug, T. M., Jaeger, H. R., Rees, J., Yousry, T. A. and Hawkes, D. J.: Non-Rigid Image Registration to Analyse Glioma Tumour Growth Patterns in Serial MR Imaging Studies, 2007.
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@inproceedings{Mang2007e, address = {Aachen}, author = {Mang, A. and Crum, W. R. and Camara-Rey, O. and Schnabel, J. A. and Penney, G. P. and Brasil-Caseiras, G. and Buzug, T. M. and Jaeger, H. R. and Rees, J. and Yousry, T. A. and Hawkes, D. J.}, booktitle = {Biomedizinische Technik / Biomedical Engineering}, keywords = {IMT}, title = {Non-Rigid Image Registration to Analyse Glioma Tumour Growth Patterns in Serial MR Imaging Studies}, volume = 52, year = 2007 }
Pfaffmann, L., Hübl, R. and Buzug, T. M.: Studie zum Einfluss von Röntgenstrahlung auf CCD-Video-Endoskope, 2007.
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@inproceedings{Pfaffmann2007a, address = {Aachen}, author = {Pfaffmann, L. and Hübl, R. and Buzug, T. M.}, booktitle = {Biomedizinische Technik / Biomedical Engineering}, keywords = {IMT}, title = {Studie zum Einfluss von Röntgenstrahlung auf CCD-Video-Endoskope}, volume = 52, year = 2007 }
Buzug, T. M., Müller, J., Neugebauer, J., Weinländer, M., Lekovic, V., Khoury, C., Vizethum, F. and Zöller, J. E.: Beurteilung von verschiedenen Keramikimplantaten bei der Sofortversorgung, 2007.
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@inproceedings{Buzug2007c, address = {Aachen}, author = {Buzug, T. M. and Müller, J. and Neugebauer, J. and Weinländer, M. and Lekovic, V. and Khoury, C. and Vizethum, F. and Zöller, J. E.}, booktitle = {Biomedizinische Technik / Biomedical Engineering}, keywords = {IMT}, title = {Beurteilung von verschiedenen Keramikimplantaten bei der Sofortversorgung}, volume = 52, year = 2007 }
Pung, M., Theisen, S., Thomsen, D., Bongartz, J. and Buzug, T. M.: Landmark Navigation for Forensic Facial Reconstruction, 325–342, 2007.
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@inproceedings{Pung2007, address = {München}, author = {Pung, M. and Theisen, S. and Thomsen, D. and Bongartz, J. and Buzug, T. M.}, booktitle = {Facial Reconstruction}, keywords = {IMT}, pages = {325-342}, publisher = {Wolters/Kluwer}, series = {Police and Research 35}, title = {Landmark Navigation for Forensic Facial Reconstruction}, year = 2007 }
Oehler, M. and Buzug, T. M.: Sinogrammbasierte Strategie zur Metallartefaktunterdrückung für die Transmissions-Computertomographie, 2007.
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@inproceedings{Oehler2007d, address = {Aachen}, author = {Oehler, M. and Buzug, T. M.}, booktitle = {Biomedizinische Technik / Biomedical Engineering}, keywords = {IMT}, title = {Sinogrammbasierte Strategie zur Metallartefaktunterdrückung für die Transmissions-Computertomographie}, volume = 52, year = 2007 }
Oehler, M. and Buzug, T.: Modified MLEM Algorithm for Artifact Suppression in CT, 3511–3518, 2006, DOI: 10.1109/NSSMIC.2006.353757.
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@inproceedings{Oehler2006d, abstract = {Iterative methods for CT image reconstruction are widely disregarded in clinical routine due to the inherent massive computational effort. On the other hand, the continuously growing computational power of today's standard computers has led to a rediscovery of these methods. Currently, filtered backprojection (FBP) is the reconstruction method of choice, because it is very fast, especially on dedicated hardware. However, a disadvantage of FBP is that it ignores some of the physical effects like beam hardening, scatter and noise, leading to artifacts in the reconstructed images. Artifacts of this type are particularly dominant if metal objects are inside the patient, because FBP interprets the corresponding projection data as inconsistent. For the method proposed here, the inconsistency of the metal-influenced projection data is reduced with an interpolation scheme working in the Radon-space domain. As the interpolation yields a vague estimate of the real soft-tissue projection values, residual inconsistencies remain. Those residuals can be treated by a modified maximum likelihood expectation maximization (MLEM) method presented in this paper. Within the novel approach, different projection lines through the object can be associated with appropriate weightings that decrease the influence of the residual inconsistencies - resulting in an overall image-quality enhancement. The approach is demonstrated on real CT measurements of a torso phantom equipped with metal markers that allows an evaluation with the corresponding ground truth data.}, author = {Oehler, M. and Buzug, T.M.}, booktitle = {Nuclear Science Symposium and Medical Imaging Conference}, keywords = {MetalArtefactReduction}, month = 10, pages = {3511-3518}, title = {Modified MLEM Algorithm for Artifact Suppression in CT}, volume = 6, year = 2006 }