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Abstract #0881

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

Christian W├╝rslin1, 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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