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Abstract #4971

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

Heeseung Lim1, Benjamin Wilk1,2, Gerald Moran3, Heather Biernaski1, Jonathan D. Thiessen1,2,4, and Frank S. Prato1,2,5
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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Keywords