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Abstract #0782

Simultaneous in-vivo respiratory and cardiac motion correction system for PET/MR

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.

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