Abstract #4542
Aortic hemodynamics with accelerated dual-venc 4D fow MRI in patients with type B aortic dissection
Ozden Kilinc1, Stanley Chu1, Justin Baraboo1,2, Elizabeth K. Weiss1,2, Anthony Maroun1, Ning Jin3, Kelvin Chow1,4, Xiaoming Bi4, Rachel Davids4, Chris Mehta5, S. Chris Malaisrie5, Andrew Hoel6, Michael Markl1,2, and Bradley D. Allen1
1Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States, 2Department of Biomedical Engineering, Northwestern University, Chicago, IL, United States, 3Cardiovascular MR R&D, Siemens Medical Solutions USA, Inc., Cleveland, OH, United States, 4Cardiovascular MR R&D, Siemens Medical Solutions USA, Inc., Chicago, IL, United States, 5Division of Cardiac Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States, 6Division of Vascular Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
Synopsis
4D flow MRI is a well-validated imaging technique for quantitative assessment of blood flow hemodynamics and has shown promise in evaluation of type B aortic dissection (TBAD). However, single velocity encoding (venc) 4D flow MRI is limited by its inability to fully capture wide range of velocities related to variable pathologic hemodynamic patterns such as true lumen and false lumen flow range of velocities in TBAD. We hypothesize that dual-venc acquisition improves velocity-to-noise ratio, better captures full dynamic range of velocities in TBAD and provides improved characterization of flow hemodynamics relative to single-venc acquisitions.
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