Impact of spatio-temporal resolution on MR-based cardiac motion correction PET-MR
Camila Munoz1, Christoph Kolbitsch1,2, and Claudia Prieto1
1Department of Biomedical Engineering, King's College London, London, United Kingdom, 2Division of Medical Physics and Metrological Information Technologies, Physikalisch-Technische Bundesanstalt, Berlin, Germany
MR-based PET motion correction has been shown to improve image quality in
cardiac PET-MR imaging. Here we present a numerical simulation study analysing
the impact of temporal and spatial resolution of motion fields on the final
image quality of myocardial perfusion PET scans in order to find the most
efficient parameters yielding accurate cardiac motion compensation in the
shortest possible scan time. Results show that cardiac motion correction is important
for accurate assessment of myocardial lesions and that temporal resolution of
the motion fields can be strongly optimised without losing diagnostic accuracy,
reducing the total exam time in PET-MR imaging.
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