Publications
- A. Tsanda, S. Reiss, K. Scheffler, M. Boberg, and T. Knopp (2026). Deep learning for restoring MPI system matrices using simulated training data. Physics in Medicine & Biology. 71. (9), [Abstract]
[doi]
- J. Backes, A. Tsanda, T. Knopp, W. Renz, and E. Schöll (2026). Combining machine learning and physiological network models for sepsis prediction. Frontiers in Network Physiology. 6. [Abstract]
[doi] [www]
- T. Merbach, M. Adrian, C. Wigger, S. Iraqi Houssaini, B. Bayer, A. Tsanda, S. Acikgöz, C. Weiland, F. Kexel, D. Herzog, M. Hoffmann, I. Kelbassa, T. Knopp, A. Penn, and M. Schlüter (2026). Comprehensive study of 3D liquid flow fields in additively manufactured structures for SMART reactors using large-scale vertical magnetic resonance imaging and computational fluid dynamics. Chemical Engineering Journal. 539. 176536 [Abstract]
[doi] [www]
- J. Dora, M. Möddel, S. Flenner, J. Reimers, B. Zeller-Plumhoff, C. G. Schroer, T. Knopp, and J. Hagemann (2025). Model-based autofocus for near-field phase retrieval. Optics Express. 33. (4), 6641-6657 [Abstract]
[doi] [www]
- J. Faltinath, F. Mohn, F. Foerger, M. Möddel, and T. Knopp (2025). Natural Frequency Dependence of Magneto-Mechanical Resonators on Magnet Distance. IEEE Sensors Journal. 25. (20), 38073-38081 [Abstract]
[doi] [www]
- J. Faltinath, M. Schmitz, F. Foerger, M. Möddel, and T. Knopp (2025). Simulating Gadolinium-Induced Magnetic Field Variations for Temperature Sensing with Magneto-Mechanical Resonators. 2025 IEEE SENSORS. 1-4 [Abstract]
[doi] [www]
- K. Scheffler, L. Meyn, F. Foerger, M. Boberg, M. Möddel, and T. Knopp (2025). Efficient measurement and representation of magnetic fields in tomographic imaging using ellipsoidal harmonics. Communications Physics. 8. (112), [Abstract]
[doi]
- M. Boberg, T. Knopp, and M. Möddel (2025). Unique compact representation of magnetic fields using truncated solid harmonic expansions. European Journal of Applied Mathematics. 1-28 [Abstract]
[doi] [www]
- F. Mohn, F. Foerger, F. Thieben, M. Möddel, I. Schmale, T. Knopp and M. Graeser (2024). Resonant Inductive Coupling Network for Human-Sized Magnetic Particle Imaging. Review of Scientific Instruments. 95. (4), 044701 [Abstract]
[doi]
- F. Mohn, K. Scheffler, J. Ackers, A. Weimer, F. Wegner, F. Thieben, M. Ahlborg, P. Vogel, M. Graeser, and T. Knopp (2024). Characterization of the Clinically Approved MRI Tracer Resotran for Magnetic Particle Imaging in a Comparison Study. Physics in Medicine & Biology. 69. (13), 135014 [Abstract]
[doi]
- F. Orsi, N. Sauerwein, R. P. Bhatt, J. Faltinath, E. Fedotova, N. Reiter, T. Cantat-Moltrecht, and J.-P. Brantut (2024). Cavity Microscope for Micrometer-Scale Control of Atom-Photon Interactions. PRX Quantum. 5. (4), 040333 [Abstract]
[doi] [www]
- F. Thieben, F. Foerger, F. Mohn, N. Hackelberg, M. Boberg, J.-P. Scheel, Möddel, M. Graeser, and T. Knopp (2024). System Characterization of a Human-Sized 3D Real-Time Magnetic Particle Imaging Scanner for Cerebral Applications. Communications Engineering. 3. (1), 47 [Abstract]
[doi]
- J. Dora, M. Möddel, S. Flenner, C. G. Schroer, T. Knopp, and J. Hagemann (2024). Artifact-suppressing reconstruction of strongly interacting objects in X-ray near-field holography without a spatial support constraint. Optics Express. 32. (7), 10801-10828 [Abstract]
[doi] [www]
- K. Scheffler, M. Boberg, and T. Knopp (2024). Solving the MPI reconstruction problem with automatically tuned regularization parameters. Physics in Medicine & Biology. 69. (4), [Abstract]
[doi]
- M. Maass, T. Kluth, C. Droigk, H. Albers, K. Scheffler, A. Mertins, and T. Knopp (2024). Equilibrium Model With Anisotropy for Model-Based Reconstruction in Magnetic Particle Imaging. IEEE Transactions on Computational Imaging. 10. 1588 - 1601 [Abstract]
[doi]
- F. Mohn, M. Exner, P. Szwargulski, M. Möddel, T. Knopp, and M. Graeser (2023). Saline bolus for negative contrast perfusion imaging in magnetic particle imaging. Physics in Medicine & Biology. 68. (17), 5026 [Abstract]
[doi]
- F. Mohn, P. Szwargulski, M. G. Kaul, M. Graeser, T. Mummert, K. M. Krishnan, T. Knopp, G. Adam, J. Salamon and C. Riedel (2023). Real-Time Multi-Contrast Magnetic Particle Imaging for the Detection of Gastrointestinal Bleeding. Scientific Reports. 13. (1), 22976 [Abstract]
[doi]
- K. Scheffler, M. Boberg, and T. Knopp (2023). Extrapolation of System Matrices in Magnetic Particle Imaging. IEEE Transactions on Medical Imaging. 42. (4), 1121 - 1132 [Abstract]
[pdf] [doi]
- T. Knopp, M. Boberg, and M. Grosser (2023). NFFT.jl: Generic and Fast Julia Implementation of the Nonequidistant Fast Fourier Transform. SIAM Journal on Scientific Computing. 45. (3), C179-C205 [Abstract]
[doi] [www]
- L. Zdun, M. Boberg, and C. Brandt (2022). Joint multi-patch reconstruction: fast and improved results by stochastic optimization. International Journal on Magnetic Particle Imaging. 8. (2), 1-8 [Abstract]
[doi] [www]
- P. Ludewig, M. Graeser, N. D. Forkert, F. Thieben, J. Rández-Garbayo, J. Rieckhoff, K. Lessmann, F. Foerger, P. Szwargulski, T. Magnus, and T. Knopp (2022). Magnetic particle imaging for assessment of cerebral perfusion and ischemia. Wiley Interdiscip Rev Nanomed Nanobiotechnol. [Abstract]
[doi] [www]
- M. Boberg, N. Gdaniec, P. Szwargulski, F. Werner, M. Möddel, and T. Knopp (2021). Simultaneous imaging of widely differing particle concentrations in MPI: problem statement and algorithmic proposal for improvement. Physics in Medicine & Biology. 66. (9), 095004 [Abstract]
[doi] [www]
- M. Grosser and T. Knopp (2021). Optimized sampling patterns for the sparse recovery of system matrices in Magnetic Particle Imaging. International Journal on Magnetic Particle Imaging. 7. (2), 1-15 [Abstract]
[doi] [www]
- M. Möddel, F. Griese, T. Kluth, and T. Knopp (2021). Estimating the Spatial Orientation of Immobilized Magnetic Nanoparticles with Parallel-Aligned Easy Axes. Phys. Rev. Applied. 16. L041003 [doi] [www]
- T. Knopp and M. Grosser (2021). MRIReco.jl: An MRI Reconstruction Framework written in Julia. Magn. Reson. Med.. 86. (3), 1633-1646 [doi] [www]
- M. Boberg, T. Knopp, P. Szwargulski, and M. Möddel (2020). Generalized MPI Multi-Patch Reconstruction using Clusters of similar System Matrices. IEEE Transactions on Medical Imaging. 39. (5), 1347-1358 [Abstract]
[doi] [www]
- N. Gdaniec, M. Boberg, M. Möddel, P. Szwargulski, and T. Knopp (2020). Suppression of Motion Artifacts Caused by Temporally Recurring Tracer Distributions in Multi-Patch Magnetic Particle Imaging. IEEE Transactions on Medical Imaging. 39. (11), 3548-3558 [Abstract]
[doi] [www]
- P. Szwargulski, M. Wilmes, E. Javidi, F. Thieben, M. Graeser, M. Koch, C. Gruettner, G. Adam, C. Gerhard, T. Magnus, T. Knopp, and P. Ludewig (2020). Monitoring Intracranial Cerebral Hemorrhage Using Multicontrast Real-Time Magnetic Particle Imaging. ACS Nano. 14. (10), 13913-13923 [Abstract]
[doi] [www] [pmid]
- M. Graeser, F. Thieben, P. Szwargulski, F. Werner, N. Gdaniec, M. Boberg, F. Griese, M. Möddel, P. Ludewig, D. van de Ven, O.M. Weber, O. Woywode, B. Gleich, and T. Knopp (2019). Human-sized Magnetic Particle Imaging for Brain Applications. Nature Communications. 10. (1936), 1-9 [Abstract]
[doi] [www]
- T. Kluth, P. Szwargulski, and T. Knopp (2019). Towards accurate modeling of the multidimensional magnetic particle imaging physics. New Journal of Physics. 21. (10), 103032 [Abstract]
[doi] [www]
- T. Knopp, M. Möddel, F. Griese, F. Werner, P. Szwargulski, N. Gdaniec, and M. Boberg (2019). MPIFiles.jl: A Julia Package for Magnetic Particle Imaging Files. Journal of Open Source Software. 4. (38), 1331 [doi] [www]
- T. Knopp, P. Szwargulski, F. Griese, M. Grosser, M. Boberg, and M. Möddel (2019). MPIReco.jl: Julia Package for Image Reconstruction in MPI. International Journal on Magnetic Particle Imaging. 5. (1), 9 pp [doi]
- M. Möddel, C. Meins, J. Dieckhoff, and T. Knopp (2018). Viscosity quantification using multi-contrast magnetic particle imaging. New Journal of Physics. 20. (8), 083001 [Abstract]
[doi] [www]
- P. Szwargulski, N. Gdaniec, M. Graeser, M. Möddel, F. Griese, K. M. Krishnan, T. M. Buzug, and T. Knopp (2018). Moving table magnetic particle imaging: a stepwise approach preserving high spatio-temporal resolution. Journal of Medical Imaging. 5. (4), 046002 [Abstract]
[doi] [www]
- T. Knopp (2018). Novel Field Sequences, Reconstruction Algorithms, and Particle Synthesis Approaches for Magnetic Particle Imaging. International Journal on Magnetic Particle Imaging. 3. (2), ID: 1803001 [www]
- F. Griese, T. Knopp, R. Werner, A. Schlaefer, and M. Möddel (2017). Submillimeter-Accurate Marker Localization within Low Gradient Magnetic Particle Imaging Tomograms. International Journal on Magnetic Particle Imaging. 3. (1), [Abstract]
[www]
- F. Werner, N. Gdaniec, and T. Knopp (2017). Improving the Spatial Resolution of Bidirectional Cartesian MPI Data using Fourier Techniques. International Journal on Magnetic Particle Imaging. 3. (1), 1-6 [doi] [www]
- M. Graeser, T. Knopp, P. Szwargulski, T. Friedrich, A. von Gladiss, M. Kaul, K. M. Krishnan, H. Ittrich, G. Adam, and T. M. Buzug (2017). Towards Picogram Detection of Superparamagnetic Iron-Oxide Particles Using a Gradiometric Receive Coil. Scientific Reports. 7. 6872 [Abstract]
[doi] [www]
- P. Szwargulski and T. Knopp (2017). Influence of the Receive Channel Number on the Spatial Resolution in Magnetic Particle Imaging. International Journal on Magnetic Particle Imaging. 3. (1), [www]
- J. Salamon, M. Hofmann, C. Jung, M.G. Kaul, F. Werner, K. Them, R. Reimer, P. Nielsen, A. vom Scheidt, G. Adam,T. Knopp, and H. Ittrich (2016). Magnetic Particle / Magnetic Resonance Imaging: In-Vitro MPI-Guided Real Time Catheter Tracking and 4D Angioplasty Using a Road Map and Blood Pool Tracer Approach. PLoS ONE. 11. (6), [doi]
