Marija Boberg, M.Sc.

Universitätsklinikum Hamburg-Eppendorf (UKE)
Sektion für Biomedizinische Bildgebung
Lottestraße 55
2ter Stock, Raum 203
22529 Hamburg

Technische Universität Hamburg (TUHH)
Institut für Biomedizinische Bildgebung
Gebäude E, Raum 4.044
Am Schwarzenberg-Campus 3
21073 Hamburg

Tel.: 040 / 7410 56309
E-Mail: m.boberg@uke.de
E-Mail: marija.boberg@tuhh.de

Research Interests

  • Magnetic Particle Imaging
  • Image Reconstruction
  • Magnetic Fields

Curriculum Vitae

Marija Boberg studied mathematics at the University of Paderborn between 2011 and 2017. She received her master's degree with her thesis on "Analyse von impliziten Lösern für Differential-Algebraische Gleichungssysteme unter Verwendung von Algorithmischem Differenzieren". Currently, she is a PhD student in the group of Tobias Knopp for Biomedical Imaging at the University Medical Center Hamburg-Eppendorf and the Hamburg University of Technology.

Journal Publications

[145062]
Title: Reducing displacement artifacts by warping system matrices in efficient joint multi-patch magnetic particle imaging
Written by: M. Boberg, T. Knopp, and M. Möddel
in: International Journal on Magnetic Particle Imaging 2020
Volume: 6 Number: 2
on pages: 1-3
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DOI: 10.18416/IJMPI.2020.2009030
URL: https://journal.iwmpi.org/index.php/iwmpi/article/view/292
ARXIVID:
PMID:

[doi] [www] [BibTex]

Note: inproceedings, multi-patch, artifact

Abstract: The reconstruction of multi-patch magnetic particle imaging data requires a compromise between image quality and calibration time. While optimal image quality is ensured by the joint reconstruction approach, a system matrix needs to be acquired for each patch. One can reuse system matrices by shifting them in space, which decreases the calibration effort but leads to distortions due to field imperfections. In this work, we introduce a method for reducing displacement artifacts in the efficient joint multi-patch reconstruction. Based on the magnetic fields we propose a mapping that warps the central system matrix to capture the spatial displacement of off-center system matrices. In this way, we can maintain the low calibration time while significantly improving the image quality.

Conference Publications

[145062]
Title: Reducing displacement artifacts by warping system matrices in efficient joint multi-patch magnetic particle imaging
Written by: M. Boberg, T. Knopp, and M. Möddel
in: International Journal on Magnetic Particle Imaging 2020
Volume: 6 Number: 2
on pages: 1-3
Chapter:
Editor:
Publisher:
Series:
Address:
Edition:
ISBN:
how published:
Organization:
School:
Institution:
Type:
DOI: 10.18416/IJMPI.2020.2009030
URL: https://journal.iwmpi.org/index.php/iwmpi/article/view/292
ARXIVID:
PMID:

[doi] [www] [BibTex]

Note: inproceedings, multi-patch, artifact

Abstract: The reconstruction of multi-patch magnetic particle imaging data requires a compromise between image quality and calibration time. While optimal image quality is ensured by the joint reconstruction approach, a system matrix needs to be acquired for each patch. One can reuse system matrices by shifting them in space, which decreases the calibration effort but leads to distortions due to field imperfections. In this work, we introduce a method for reducing displacement artifacts in the efficient joint multi-patch reconstruction. Based on the magnetic fields we propose a mapping that warps the central system matrix to capture the spatial displacement of off-center system matrices. In this way, we can maintain the low calibration time while significantly improving the image quality.