Mirco Grosser, M.Sc.
Universitätsklinikum Hamburg-Eppendorf (UKE)
Sektion für Biomedizinische Bildgebung
2ter Stock, Raum 202
Technische Universität Hamburg (TUHH)
Institut für Biomedizinische Bildgebung
Gebäude E, Raum 4.044
Am Schwarzenberg-Campus 3
Tel.: 040/ 7410 56355
- Magnetic Resonance Imaging
- Image Reconstruction
Mirco Grosser is a PhD student in the group of Tobias Knopp for experimental Biomedical Imaging at the University Medical Center Hamburg-Eppendorf and the Hamburg University of Technology. From 2010 to 2016 he studied physics at the University of Hamburg. In 2016 he obtained his master's degree with a thesis on "Attosecond x-ray scattering from a particle-hole wave packet".
|Title: Low Rank Approach to Sparse System Matrix Recovery for MPI|
|Written by: M. Grosser and T. Knopp|
|in: 9th International Workshop on Magnetic Particle Imaging (IWMPI 2019) 2019|
|on pages: 31-32|
Abstract: In magnetic particle imaging, the time consuming measurement of a system function is required before image reconstruction. Reduction of measurement time has been achieved with the help of compressed sensing, which is based on the sparsity of the system function in some transform domain. In this work we demonstrate that the rows of a system function can be approximated by low-rank tensors. We develop a recovery method exploiting both the low rank of system function rows and the sparsity of their DCT coefficients. Experiments show that the proposed method yields system functions with increased accuracy and reduced noise.