Abstract #0782

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

Thomas Küstner^1,2, Christian Würslin^1,3, Martin Schwartz^1,2, 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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