Abstract #0881

Efficient 5D imaging of thorax and abdomen for MR-guided PET motion correction

Christian Würslin¹, Dominik Fleischmann², and Roland Bammer¹

¹Radiological Sciences Laboratory, Stanford University, Stanford, CA, United States, ²Cardiovascular Imaging Section, Department of Radiology, Stanford University, Stanford, CA, United States

Cardiac imaging under free breathing is a desirable tool for clinical routine, which can provide improved patient comfort and shorter examination times. Furthermore, it can be used in the context of MR-guided PET motion correction in simultaneous PET-MRI. Here, we propose a radial acquisition and reconstruction framework for the acquisition of these images. A piecewise rigid respiration motion model enables a highly efficient use of the acquired data to either achieve higher image quality or shorter examination times than standard, dual-gated techniques.

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