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Abstract #1953

Dual-Venc 4D Spiral Imaging of Aortic Flows

Sean P Callahan1, Alex Henn1, MJ Negahdar1, Michael Kendrick2, Hui wang3, Narayana Sarma Singam2,4, Marcus Stoddard2,4, and Amir Amini1,2

1Electrical and Computer Engineering, University of Louisville, Louisville, KY, United States, 2Robley Rex VA Medical Center, Louisville, KY, United States, 3Philips Health Care, Gainesville, FL, United States, 4Division of Cardiovascular Medicine, University of Louisville, Louisville, KY, United States

Dual-Venc is a technique for MR flow imaging which uses two Vencs to acquire a cardiac cycle, improving diastolic data. Dual Venc 4D flow with spiral readouts was used to image the outflow tract and through the aortic valve in both phantom and patients with severe aortic stenosis. In-vitro model of the aortic arch included a calcific polymeric valve which behaved physiologically. The results of in-vitro and in-vivo scans show that 4D Spiral Dual-Venc Flow is comparable in results to 4D Cartesian Flow in systole, while improving diastolic data, and reducing scan time by 30% to 50%.

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