1Radiology, University of Wisconsin, Madison, WI, United States; 2Radiology, University of Wisconsin-Madison, Madison, WI, United States; 3Global MR Applied Science Laboratory, GE Healthcare, Menlo Park, CA, United States; 4Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI, United States; 5Medical Physics, University of Wisconsin, Madison, WI, United States
Accurate measurement of the aortic root is important to plan interventions and evaluate aortic abnormalities. 3D chemical-shift-encoded MRI during free-breathing can provide high-resolution, fat-suppressed images of the whole heart that can be used to perform morphological measurements. In this work, we compare aortic root measurements performed using this MRI technique with reference values obtained from conventional cardiac CTA. Repeatability of aortic root measurements performed with 3D chemical-shift-encoded MRI is also evaluated in relation to repeatability of CTA-based measurements.