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Abstract #2464

Visualization of Aortic Root Vortex and Aortic Flow for Symptomatic Marfan Syndrome Patients by Phase-Contrast MRI

Hung-Hsuan Wang 1 , Hsin-Hui Chiu 2 , Wen-Yih Isaac Tseng 3 , and Hsu-Hsia Peng 1

1 Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan, 2 Pediatrics, Taipei Medical University Hospital, Taipei, Taiwan, 3 Center for Optoelectronic Biomedicine, College of Medicine, National Taiwan University, Taipei, Taiwan

The purpose of this study is to observe the aortic root vortex and to quantify vorticity in specific sites along the aorta with usage of phase-contrast MRI so as to realize the impact of vortical flow on the risk of aortic dissection. In the velocity vector fields in left ventricular outflow track view, the presence of vortical flow at peak systole and the absence of vortices at end systole may attribute to the dilated aortic root in MFS patients. The quantified vorticity also showed decreased values for MFS patients, particular in the sinotubular junction.

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