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Abstract #0123

PET/MR respiratory motion gating for free

Florian Wiesinger1, Timothy Deller2, Floris Jansen2, Jose de Arcos Rodriguez1, Ronny R Buechel3, Philipp A Kaufmann3, and Edwin EGW ter Voert3
1GE Healthcare, Munich, Germany, 2GE Healthcare, Waukesha, WI, United States, 3Department of Nuclear Medicine, University Hospital Zurich, Zurich, Switzerland

Respiratory motion correction is a long-standing problem in hybrid PET/MR imaging with many partial solutions. Here we present a novel method based on extracting respiratory motion information from the PET data using the ultra-fast listmode reconstruction framework. Doing so a highly accurate respiratory waveform derived from the inside of the body (i.e. lung liver interface) is obtained for free without requiring an extra motion sensor or complicating the PET/MR imaging workflow.

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