2022/06/23 by Scheffler, Konrad, Boberg, Marija, Knopp, Tobias
#Informatik #Medizin
paper · doi:10.15480/882.4405
In multi-patch magnetic particle imaging an artifact-free image can be obtained by using a joint reconstruction and measuring the system matrices not only in the field-of-view but also in a huge overscan. This leads to a long calibration time and heavy memory consumption and therefore an unsuitability of this method for large three-dimensional measurements. In this work, we propose to only measure the system matrices in the field-of-view and to use a diffusion based extrapolation step to extend the system matrices computationally into the overscan. In this way, we massively reduce the calibration time while maintaining a nearly artifact-free image.