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Abstract #3975

Deep learning based quantitative susceptibility mapping (QSM) in the presence of fat by using synthetically generated multi-echo phase data

Jannis Hanspach1, Aurel Jolla1, Michael Uder1, Bernhard Hensel2, Steffen Bollmann3, and Frederik Bernd Laun1
1Institute of Radiology, University Hospital Erlangen, Friedrich‐Alexander‐Universität Erlangen‐Nürnberg (FAU), Erlangen, Germany, 2Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Center for Medical Physics and Engineering, Erlangen, Germany, 3University of Queensland, Brisbane, Australia, School of Information Technology and Electrical Engineering, Brisbane, Australia

Deep Learning reconstruction methods are increasingly investigated in Quantitative Susceptibility Mapping (QSM). In this work, we applied a UNET to reconstruct susceptibility maps in the presence of fat from unwrapped phase maps. The network was trained using synthetically generated multi-echo phase data and does not require explicit masking for the background field correction. Our results show that the proposed approach is well-suited to rapidly reconstruct high quality susceptibility maps in the presence of fat (e.g., outside the central nervous system) in in vivo data.

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