Abstract #2578
In-vivo MR-derived non-rigid motion correction of simultaneously acquired PET
Thomas Kstner 1,2 , Christian Wrslin 1 , Sergios Gatidis 1 , Petros Martirosian 3 , Nina Schwenzer 1 , Bin Yang 2 , and Holger Schmidt 1
1
Department of Radiology, University Hospital
of Tbingen, Tbingen, Baden-Wrttemberg, Germany,
2
Institute
of Signal Processing and System Theory, University of
Stuttgart, Stuttgart, Baden-Wrttemberg, Germany,
3
Diagnostic
and Interventional Radiology, University Hospital of
Tbingen, Tbingen, Baden-Wrttemberg, Germany
In the field of oncology, simultaneous PET/MR scanners
offer a great potential for improving diagnostic
accuracy. However for accurate lesion detection and
quantification, the induced motion artifacts in the PET
image originating from a long free-breathing acquisition
have to be compensated. The simultaneous acquisition
allows performing a MR-based non-rigid motion correction
of the PET data. Therefore it is essential to acquire a
4D MR image as accurate and fast as possible under
free-breathing conditions. We propose a clinical
feasible motion correction setup which uses a Compressed
Sensing acquisition. In-vivo patient data substantiates
the diagnostic improvement of the motion corrected PET.
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