Thomas Küstner1,2, Christian Würslin1,3, Martin Schwartz1,2, Petros Martirosian1, Sergios Gatidis1, Konstantin Nikolaou1, Fritz Schick1, Bin Yang2, Nina F. Schwenzer1, and Holger Schmidt1
1University Hospital Tübingen, Tübingen, Germany, 2Institute of Signal Processing and System Theory, University of Stuttgart, Stuttgart, Germany, 3University of Stanford, Palo Alto, CA, United States
In
oncologic imaging, simultaneous Positron-Emission-Tomography/Magnetic Resonance
(PET/MR) scanners offer a great potential for improving diagnostic accuracy. An
accurate diagnosis requires a high PET image quality reflecting in long PET examination
times under free movement conditions (respiration and heartbeat). Hence, to
ensure this high image quality one has to overcome the motion-induced
artifacts. The simultaneous acquisition allows performing a MR-based non-rigid
motion correction of the PET image. We propose a clinical feasible respiratory
and cardiac motion correction system with a reduced scan time of only 60s,
freeing time for additional diagnostic MR sequences. In-vivo patient data
substantiates the diagnostic improvements.
