Abstract #4971

Quantification and evaluation of cardiac motion correction methods for hybrid PET/MRI

Heeseung Lim¹, Benjamin Wilk^1,2, Gerald Moran³, Heather Biernaski¹, Jonathan D. Thiessen^1,2,4, and Frank S. Prato^1,2,5

¹Lawson Imaging, Lawson Health Research Institute, London, ON, Canada, ²Medical Biophysics, Western University, London, ON, Canada, ³Siemens Healthcare Limited, Oakville, ON, Canada, ⁴Medical Imaging, Western University, London, ON, Canada, ⁵Physics and Astronomy, Western University, London, ON, Canada

Synopsis

Keywords: Heart, CardiovascularDifferent motion correction methods for cardiac imaging were compared with no motion correction and free-motion images on a hybrid PET/MRI platform. These data were acquired in eight large animals five days after induction of myocardial infarction. PET/MRI images were acquired under different conditions of cardiac and respiratory motion: BodyCompass™, XD-GRASP, ECG gated. Upon completion of in vivo imaging, the animal was immediately euthanized within the scanner, and motion-free images were acquired. Initial quantitative evaluation of the cardiac images showed variation in mean and standard deviation values between the region of interest and different motion correction methods.

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