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Abstract #1231

Imaging of aortic valve dynamics: comparison between sub-millisecond MRI and echocardiography

Alessandro M Scotti1, Qingfei Luo1, Zheng Zhong2, Noreen T Nazir3, Karen L Xie4, and Xiaohong Joe Zhou1,4,5,6
1Center for MR Research, University of Illinois at Chicago, Chicago, IL, United States, 2Department of Radiology, Stanford University, Stanford, CA, United States, 3Division of Cardiology, Department of Medicine, University of Illinois at Chicago, Chicago, IL, United States, 4Department of Radiology, University of Illinois at Chicago, Chicago, IL, United States, 5Department of Neurosurgery, University of Illinois at Chicago, Chicago, IL, United States, 6Department of Biomedical Engineering, University of Illinois at Chicago, Chicago, IL, United States

Synopsis

The aortic valve dynamics is traditionally examined using ultrasound echocardiography in clinical practice. Recently, a novel MRI technique capable of sub-millisecond temporal resolution, coined get-SPEEDI MRI, was successfully applied to visualize the aortic valve dynamics. We have evaluated both get-SPEEDI and echocardiography on healthy human subjects and found a substantial agreement between both techniques in the characterization of the aortic valve opening and closing phases. The sub-millisecond temporal resolution of get-SPEEDI allows for the measurement of steep AVA variations and the visualization of detailed features that may reflect the cardiac function and physiology.

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