Dr. rer. nat. Kerstin Lüdtke-Buzug
Institut für Medizintechnik
Universität zu Lübeck
Ratzeburger Allee 160
23562 Lübeck
Gebäude 64,
Raum 057
Email: | kerstin.luedtkebuzug(at)uni-luebeck.de |
Phone: | +49 451 3101 5407 |
Fax: | +49 451 3101 5404 |
Roles
Senior Research Scientist
Radiation Protection Officer (RPO) at IMT
Vice Equal Opportunity Manager at UzL
Member of the Equal Opportunity Council
Research Interests
- Magnetic Nanoparticles
- Tracer Development for MPI
For citations see Google Scholar or Scopus.
Curriculum Vitae
Kerstin Lüdtke-Buzug was born in Lübeck, Germany, in 1963. She received her Diplom-Chemikerin degree from the Christian-Albrechts-University of Kiel, Germany in 1990. In 1994 she received her Ph.D. from the Medical University of Lübeck where she worked on Synthesis and Electrochemical Investigations of Azosubstituted Porphyrins. Granted by the DAAD and the Universty of Aveiro she had a postdoctoral position at the Institute of Chemistry at the University of Aveiro, Portugal in 1995. In Aveiro she investigated b-Aminoporphyrins in the synthesis of new compounds with potential applications in photodynamic therapy (PDT). From 1995 to 1997 she worked as freelance consultant in the field of environmental toxicology. In 1996 she passed a post gradual study at the Weiterbildung, Umwelt- und Kulturmanagement GmbH (WUK) in Kiel where she became "Referentin im Umweltschutz". From 1997 to mid 1999 she worked at the SKP group in Lübeck (Altroh GmbH) and Kiel (Rohstoffhandel Kiel RHK GmbH) at the quality-management department, responsible for audits requested by the DSD (German Recycling Program). Mid of 1999 she became member of the scientific staff at the RheinAhrCampus Remagen responsible for conceptional planning and set up of the chemistry laboratory. In spring 2001 she became lecturer of chemistry and head of the chemistry laboratory at the RheinAhrCampus Remagen. Since 2007 she is member of the scientific team at the Institute of Medical Engineering at the University of Luebeck. Scince 2013 she is consultant in the field of nanoparticle synthesis and applications for Nandatec a nano-biotechnology start-up.
Publications
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- [ 2009 ]
- [ 2008 ]
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Instrument markers for magnetic particle and magnetic resonance imaging, 2022.
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Magnetic particle imaging, Die Radiologie, 62(6), 496–503, 2022, DOI: 10.1007/s00117-022-01011-9.
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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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High gradient nested Halbach system for steering magnetic particles, International Journal on Magnetic Particle Imaging, Vol 8 No 1 Suppl 1 (2022), 2022, DOI: 10.18416/IJMPI.2022.2203012.
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Recent developments in magnetic particle imaging, Journal of Magnetism and Magnetic Materials, 550, 169037, 2022, DOI: 10.1016/j.jmmm.2022.169037.
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Heating of an Aortic Stent for Coarctation Treatment During Magnetic Particle Imaging and Magnetic Resonance Imaging---A Comparative In Vitro Study, CardioVascular and Interventional Radiology, 2021, DOI: 10.1007/s00270-021-02795-4.
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Magnetic particle imaging, In: Imaging Modalities for Biological and Preclinical Research: A Compendium, IOP Publishing, , II.8–1 to II.8, 2021, DOI: 10.1088/978-0-7503-3747-2ch12.
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Further system characterization of the Single-Sided MPI Scanner with two- and three-dimensional measurements, International Journal on Magnetic Particle Imaging, Vol 7 No 2 (2021), 2021, DOI: 10.18416/IJMPI.2021.2109001.
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Magnetic Particle Imaging: In vitro Signal Analysis and Lumen Quantification of 21 Endovascular Stents, International Journal of Nanomedicine, 16, 213–221, 2021, DOI: 10.2147/IJN.S284694.
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Navigation of a magnetic micro-robot through a cerebral aneurysm phantom with magnetic particle imaging, Scientific Reports, 11(1), 2021, DOI: 10.1038/s41598-021-93323-4.
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Evaluation of antiplasmodial activity and cytotoxicity assays of amino acids functionalized magnetite nanoparticles: Hyperthermia and flow cytometry applications, Materials Science and Engineering: C, 125, 112097, 2021, DOI: 10.1016/j.msec.2021.112097.
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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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Magnetic Particle Imaging: Artifact-Free Metallic Stent Lumen Imaging in a Phantom Study, CardioVascular and Interventional Radiology, 43(2), 331–338, 2020, DOI: 10.1007/s00270-019-02347-x.
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Multimodal Targeted Nanoparticle-Based Delivery System for Pancreatic Tumor Imaging in Cellular and Animal Models, Current Pharmaceutical Design, 26, 2020, DOI: 10.2174/1381612826666200717084846.
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A magnetic micro-robot for aneurysm coiling with magnetic particle imaging, 2020.
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Dynamic 2D Imaging with an MPI Scanner Featuring a Mechanically Rotated FFL, 5, 2019.
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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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Actuation and visualization of a SPION-coated swimmer with magnetic particle imaging, 14, 2019.
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Verification of the Linear System Response of a Single-Sided MPI Device, 51–52, 2019.
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Additive manufacturing of superparamagnetic micro-devices for magnetic actuation, 153–154, 2019, DOI: 10.18416/AMMM.2019.1909S09T06.
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Actuation and Visualization of a Magnetically Coated Swimmer with Magnetic Particle Imaging, Journal of Magnetism and Magnetic Materials, 2019, DOI: 10.1016/j.jmmm.2018.10.056.
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Magnetic Particle Imaging, In: Precision Medicine: Tools and Quantitative Approaches, Elsevier, Oxford, 183–228, 2018, ISBN: 978-0-12-805364-5.
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Manipulation of Magnetically Coated Swimmers Inside a Magnetic Particle Imaging Scanner, 2018.
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Magnetic particle imaging in vascular medicine, Innovative Surgical Sciences, 3, 179, 2018, DOI: 10.1515/iss-2018-2026.
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New MPI Tracer Material - A Resolution Study, 33–34, 2018.
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Investigation on new MPI tracer material, 71, 2017.
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Synthesis and Characterisation of Superparamagnetic Polylactic acid based Polymers, International Journal on Magnetic Particle Imaging, 3(2), 1710001, 2017, DOI: 10.18416/ijmpi.2017.1710001.
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Effect of key parameters on synthesis of superparamagnetic nanoparticles (SPIONs), Current Directions in Biomedical Engineering, 2(1), 529–532, 2016, DOI: 10.1515/cdbme-2016-0117.
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MPS study on new MPI tracer material, 2016.
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Development and characterization of superparamagnetic coatings, Current Directions in Biomedical Engineering, 1(1), 1–4, 2015, DOI: 10.1515/cdbme-2015-0001.
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Stability analysis of ferrofluids, Current Directions in Biomedical Engineering, 1(1), 10–13, 2015, DOI: 10.1515/cdbme-2015-0003.
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Contribution of brownian rotation and particle assembly polarisation to the particle response in magnetic particle spectrometry, Current Directions in Biomedical Engineering, 1(1), 298–301, 2015, DOI: 10.1515/cdbme-2015-0074.
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SPIO processing in macrophages for MPI - the breast cancer MPI-SNLB-concept, 228, 2015, DOI: 10.1515/bmt-2015-5010.
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Construction of a device for magnetic separation of superparamagnetic iron oxide nanoparticles, Current Directions in Biomedical Engineering, 1(1), 306–309, 2015, DOI: 10.1515/cdbme-2015-0076.
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Magnetic particle imaging: current developments and future directions, International Journal of Nanomedicine, 10, 3097–3114, 2015, DOI: 10.2147/ijn.s70488.
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Evaluation of a Cotton-Mouton Relaxometer for the Characterization of Superparamagnetic Iron Oxide Nanoparticles, 2015, DOI: 10.1109/IWMPI.2015.7107058.
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SPIO Detection and Distribution in Biological Tissue - A Murine MPI-SLNB Breast Cancer Model, IEEE Transactions on Magnetics, 51(2), 5400104, 2015, DOI: 10.1109/TMAG.2014.2358272.
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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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Magnetic Flow Field Separation of Superparamagnetic Dextran Coated Iron Oxide Nanoparticles, 2015, DOI: 10.1109/IWMPI.2015.7107063.
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A Device for Measureing the Trajectorey Dependent Magnetic Particle Performance for MPI, 2015, DOI: 10.1109/IWMPI.2015.7107078.
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Analyzing Superparamagnetic Iron Oxide Nanoparticles (SPIONs) using Electrical Impedance Spectroscopy, 2015, DOI: 10.1109/IWMPI.2015.7107062.
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Superparamagnetic Coatings for Magnetic Particle Imaging, 2014, DOI: 10.1515/bmt-2014-5009.
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Biological impact of superparamagnetic iron oxide nanoparticles for magnetic particle imaging of head and neck cancer cells, International Journal of Nanomedicine, 9, 5025–5040, 2014, DOI: 10.2147/ijn.s63873.
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Development of SPION-Coatings for Visualization of Surgical Instruments in Magnetic Particle Imaging, 2014.
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Viscosity Affected Determination of Iron Concentration of MPI Tracers Based on Micro-CT, 157, 2014.
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SPIO detection and distribution in biological tissue – a murine MPI-SNLB breast cancer model, 166, 2014.
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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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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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Processing of nanoparticles in organism - further development of the breast cancer SNLB-concept using SPIOs and MPI, 314, 2014, DOI: 10.1515/bmt-2014-41.
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Development of Superparamagnetic Surface Coatings, 158, 2014.
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Micro CT-based Determination of Ferrofluid Iron Concentration, 2014.
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A Cotton-Mouton Spectrometer with Optimized Field Cancellation Using n-MOSFET-Based Current Switching, 2014, DOI: 10.1515/bmt-2014-5009.
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Magnetic particle imaging: kinetics of the intravascular signal in vivo, International Journal of Nanomedicine, 4203–4209, 2014, DOI: 10.2147/ijn.s49976.
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Stability Analysis Of Superparamagnetic Iron Oxide Nanoparticles (Spions) At 37 °C, 2013, DOI: 10.1515/bmt-2013-4099.
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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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Magnetische Nanopartikel - Tracer für Magnetic Particle Imaging, 15, 2013.
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Sentinellymphknoten-Detektion durch Realtime-3D-Navigation unter Verwendung superparamagnetischer Nanopartikel und Magnetic Particle Imaging, Senologie, 10, A8, 2013, DOI: 10.1055/s-0033-1347543.
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Simulation of the magnetization dynamics of diluted ferrofluids in medical applications, Biomedizinische Technik / Biomedical Engineering, 58(6), 601–609, 2013, DOI: 10.1515/bmt-2013-0034.
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Construction of a Spectrometer to Measure the Cotton-Mouton Effect of Superparamagnetic Iron Oxide Nanoparticles, 2013, DOI: 10.1515/bmt-2013-4102.
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Magnetic Particle Imaging - eine Einführung in die Instrumentierung und Bildrekonstruktion, 95–100, 2013.
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Micro CT-based validation of iron concentration for MPI tracers, 2013, DOI: 10.1109/IWMPI.2013.6528337.
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Investigation of Different Tissue Samples with Micro-CT and MPS for Determination of Iron-Oxide Concentration of Tracers for MPI, 107–110, 2013.
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Investigation of Different Tissue Samples with ΜCT and MPS for Determination of Iron Oxide Concentration in Tracers for MPI, 2013, DOI: 10.1515/bmt-2013-4100.
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Comparison of commercial iron oxide-based MRI contrast agents with synthesized high-performance MPI tracers, Biomedizinische Technik / Biomedical Engineering, 58(6), 527–533, 2013, DOI: 10.1515/bmt-2012-0059.
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Lymphatic Tissue and Superparamagnetic Nanoparticles - Magnetic Particle Imaging for Detection and Distribution in a Breast Cancer Model, 2013, DOI: 10.1515/bmt-2013-4262.
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Fundamentals and Potential of Magnetic Particle Imaging, Current Cardiovascular Imaging Reports, 6(5), 390–398, 2013, DOI: 10.1007/s12410-013-9217-1.
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Magnetic Particle Imaging: Kinetics of the intravascular signal in vivo, 2013, DOI: 10.1109/IWMPI.2013.6528350.
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Magnetic Particle Imaging (MPI), RöFo: Fortschritte auf dem Gebiet der Röntgenstrahlen und bildgebenden Verfahren, 2012.
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Superparamagnetic Iron Oxide Nanoparticles: Evaluation of Stability of SPIONs in Different Milieu for Magnetic Particle Imaging, 105–109, 2012, DOI: 10.1007/978-3-642-24133-8_17.
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Determination of Iron Oxide Concentrations in Ferrofluids using a Micro-CT Phantom, 498, 2012, DOI: 10.1515/bmt-2012-4273.
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Distribution of Superparamagnetic Nanoparticles in Lymphatic Tissue for Sentinel Lymph Node Detection in Breast Cancer by Magnetic Particle Imaging, 187–191, 2012, DOI: 10.1007/978-3-642-24133-8_30.
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Construction and Calibration of a Micro-CT Phantom for the Determination of Iron Oxide Concentration in Ferrofluids, 63–66, 2012.
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Eisenoxidnanopartikel für Magnetic Particle Imaging (MPI), 7933, 2012.
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Iron oxide nanoparticles for magnetic particle imaging (MPI), B-0975, 2012.
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Initial MPS Response of Adsorptively-Coated Fluorescent Iron Oxide Nanoparticles, 47–52, 2012, DOI: 10.1007/978-3-642-24133-8_8.
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Superparamagnetic Dextran Coated Iron Oxide Nanoparticles (SPIO) as Potential Markers for Tumor Cell Detection, 367–368, 2012, DOI: 10.1007/978-3-642-24133-8_60.
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Eisenoxidpartikel für Magnetic Particle Imaging (MPI), 2012.
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Magnetic particle imaging: Introduction to imaging and hardware realization, Zeitschrift für Medizinische Physik, 22(4), 323–334, 2012, DOI: 10.1016/j.zemedi.2012.07.004.
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An Application Scenario for Single-Sided Magnetic Particle Imaging, 514, 2012, DOI: 10.1515/bmt-2012-4343.
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Magnetic-Particle-Imaging for Sentinel Lymph Node Biopsy in Breast Cancer, 237–241, 2012, DOI: 10.1007/978-3-642-24133-8_38.
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Magnetische Nanopartikel - Von der Synthese zur klinischen Anwendung, Chemie in unserer Zeit, 46(1), 32–39, 2012, DOI: 10.1002/ciuz.201200558.
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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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Single-sided magnetic particle imaging device for the sentinel lymph node biopsy scenario, 83170S, 2012, DOI: 10.1117/12.912733.
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Detection and distribution of superparamagnetic nanoparticles in lymphatic tissue in a breast cancer model for magnetic particle imaging, 81–83, 2012, DOI: 10.1515/bmt-2012-4158.
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Sentinel lymph node detection in breast cancer through superparamagnetic nanoparticles for magnetic particle imaging, 2011.
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Magnetic Particle Imaging: Novel Field Generating Devices for Optimized Imaging, 2011.
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Magnetic Particle Imaging durch Superparamagnetische Nanopartikel zur Sentinellymphknotendetektion beim Mammakarzinom, M_17, 2011, DOI: 10.1055/s-0031-1286434.
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Stability Evaluation of Superparamagnetic Iron Oxide Nanoparticles in Different Media for Magnetic Particle Imaging, 2011.
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Magnetic Particle Imaging durch superparamagnetische Nanopartikel zur Sentinellymphknotendetektion beim Mammakarzinom, A15, 2011, DOI: 10.1055/s-0031-1278017.
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Novel hardware developments in magnetic particle imaging, 2011, DOI: 10.1117/12.877158.
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Magnetic Methods for Separation and Purification of Superparamagnetic Iron Oxide Nanoparticles, 2011.
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Magnetic Particle Imaging: Principles and Clinical Application, In: Nanomedicine – Basic and Clinical Applications in Diagnostics and Therapy, Karger, Basel, 88–95, 2011, DOI: 10.1159/000328894.
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Superparamagnetic Iron Oxide Nanoparticles for Magnetic Particle Imaging, 2, 2010.
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Nanoparticel labelling of stem cell populations in head and neck cancer, Journal of Stem Cells and Regenerative Medicine, 6(2), 143, 2010.
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Efficient Field-Free Line Generation for Magnetic Particle Imaging, 26, 2010.
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Sentinal Lymphnode Detection in Breast Cancer by Magnetic Particle Imaging Using Superparamagnetic Nanoparticles, 35, 2010, DOI: 10.1142/9789814324687_0029.
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1st International Workshop on Magnetic Particle Imaging (IWMPI 2010) - Book of Abstracts, Verlags- und Druckhaus Max Schmidt-Römhild KG, Lübeck, 2010, ISBN: 9783795070762.
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Characterization of Iron‐Oxide Loaded Adult Stem Cells for Magnetic Particle Imaging in Targeted Cancer Therapy, 244–248, 2010, DOI: 10.1063/1.3530019.
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Ein magnetisches Partikel-Spektrometer zur Messung der Magnetisierung von Nanopartikeln unter der Verwendung von AC- und DC-Feldern, 295pp, 2010.
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Monitoring adult stem cell response on superparamagnetic iron oxide nanoparticles for cancer therapy, Journal of Stem Cells and Regenerative Medicine, 6(2), 144, 2010.
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Analyse des Separationsergebnisses bei der Herstellung Superparamagnetischer Eisenoxid-Nanopartikel für Magnetic Particle Imaging, 640pp, 2010.
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Bioengineering superparamagnetic iron oxide nanoparticles for stem cell-based immunotherapy, 49, 2010.
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A Spectrometer to Measure the Usability of Nanoparticles for Magnetic Particle Imaging, 60–65, 2010.
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Resolution Distribution in Single-Sided Magnetic Particle Imaging, 106–112, 2010, DOI: 10.1142/9789814324687_0015.
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Magnetic Particle Imaging: Evaluation unterschiedlicher superparamagnetischer Eisenoxidpartikel für ein neues bildgebendes Verfahren, RöFo: Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren, 182(S 01), 2010, DOI: 10.1055/s-0030-1252832.
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Magnetic Particle Imaging: Evaluation unterschiedlicher superparamagnetischer Eisenoxidpartikel für ein neues bildgebendes Verfahren, 2010, DOI: 10.1055/s-0030-1268342.
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Current Iron Oxide Nanoparticles - Impact on MRI and MPI, 12, 2010.
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A Spectrometer Using Oscillating and Static Fields to Measure the Suitability of Super-Paramagnetic Nanoparticles for Magnetic Particle Imaging, 96, 2010.
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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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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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Magnetic Particle Imaging durch Superparamagnetische Nanopartikel zur Sentinellymphknotendetektion beim Mammakarzinom, A096, 2009, DOI: 10.1055/s-0029-1239012.
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Magnetic Particle Imaging – Challenges and Promises of a New Modality, 1471–1474, 2009, DOI: 10.1007/978-3-642-03882-2_390.
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Single-Sided Coil Configuration for Magnetic Particle Imaging, 281–284, 2009, DOI: 10.1007/978-3-642-03885-3_78.
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Synthesis and Spectroscopic Analysis of Super-Paramagnetic Nanoparticles for Magnetic Particle Imaging, J054, 2009.
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Hand-Held Concept of a Magnetic Particle Imaging Device, J521, 2009.
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A Study on the Performance of Different Superparamagnetic Iron Oxide Particles in Magnetic Particle Imaging, 709, 2009.
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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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The Influence of the Particle-Size Distribution on the Image Resolution in Magnetic Particle Imaging, 499, 2009.
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Particle-Size Distribution of Dextran- and Carboxydextran-Coated Superparamagnetic Nanoparticles for Magnetic Particle Imaging, 226–229, 2009, DOI: 10.1007/978-3-642-03887-7_63.
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Preparation and Characterization of Dextran-Covered Fe3O4 Nanoparticles for Magnetic Particle Imaging, 2343–2346, 2008, DOI: 10.1007/978-3-540-89208-3_562.
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A Spectrometer for Magnetic Particle Imaging, 2313–2316, 2008, DOI: 10.1007/978-3-540-89208-3_555.
Older Publications
K. Lüdtke,
Reaktivität ungesättigter Organosiliciumverbindungen gegenüber Elektrophilen,
Diplomarbeit, September 1990, Christian-Albrechts-Universität zu Kiel.
H. Mayr, J. L. Gonzales und K. Lüdtke,
Comparison of the Nucleophilicities of Alkynes and Alkenes. Quantitative Determination of the Nucleophilicities of Alkynes toward Carbenium Ions,
Chem. Ber. 127, 1994, 525.
K. Lüdtke und H. K. Hombrecher,
Synthesis of Azosubstituted Porphyrins,
XI. Meeting in Organic Chemistry, September 1991, Kopenhagen.
K. Lüdtke und H. K. Hombrecher,
Synthesis and Electrochemical Investigations of Azosubstituted Porphyrins,
XII. Meeting in Organic Chemistry, August 1993, Kiel.
K. Lüdtke, V. Gerdan und H. K. Hombrecher,
Synthesis of ß-Azo Bridged Diporphyrins,
XII. Meeting in Organic Chemistry, August 1993, Kiel.
K. Lüdtke und H. K. Hombrecher,
Synthese und elektrochemische Untersuchungen azo-substituierter Porphyrine,
24. GDCh-Hauptversammlung, 5.-11. September 1993, Hamburg, 473.
H. K. Hombrecher und K. Lüdtke,
Synthesis and Spectroscopic Investigations of Directly Azobenzene Bridged Diporphyrins,
Tetrahedron 42, 1993, 9489.
K. Lüdtke,
Synthese, spektroskopische und elektrochemische Untersuchungen von azosubstituierten Porphyrinen,
Dissertation, September 1994, Medizinische Universität zu Lübeck.
K. Lüdtke,
ß-Aminoporphyrins in the synthesis of new compounds with potential applications in photodynamic therapy (PDT),
Report, Mai 1995, Universidade de Aveiro.
H. K. Hombrecher, K. Lüdtke und D. Koll,
Synthesis and Electrochemical Investigation of Azobenzene-Substituted Porphyrins,
J. prakt. Chem. 338, 1996, 257.
K. Lüdtke, C. M. A. Alonso, M. G. P. M. S. Neves, J. A. S. Cavaleiro, H. K. Hombrecher,
Synthesis of Substituted meso-Tetraphenylporphyrin Derivatives,
11th International Conference on Organic Synthesis (ICOS-11), 30.6.-4.7.1996, Amsterdam, Niederlande.
K. Lüdtke, C. M. A. Alonso, M. G. P. M. S. Neves, A. M. S. Silva, J. A. S. Cavaleiro,
A New Approach to the Synthesis of Unsaturated ß-Substituted-meso-Tetraphenyl-porphyrins,
Heterocyclic Communications 3, 1997, 503.