Abstract #1398

Preclinical Evaluation of a 3D Technique for Whole-Heart Water-Fat Imaging: Comparison with CT

Valentina Taviani¹, Diego Hernando², Alejandro Munoz Del Rio¹, Ann Shimakawa³, Randi Drees⁴, Rebecca Johnson⁴, Karl K. Vigen¹, Scott B. Reeder¹,⁵, Christopher J. Francois²

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.