Abstract #3835

Quantitative Mitral Valvular Regurgitation Hemodynamics Analysis Using 4D flow MRI and Echocardiography: Characteristics of Flow Momentum

Jeesoo Lee¹, Adarsh Aratikatla¹, Erik Wu², Taimur Safder³, Gloria Ayuba³, James Thomas³, and Michael Markl⁴

¹Radiology, Northwestern University, Chicago, IL, United States, ²Northwestern University, Chicago, IL, United States, ³Cardiology, Northwestern Memorial Hospital, Chicago, IL, United States, ⁴Radiology, Northwestern University, chicago, IL, United States

Synopsis

Keywords: Valves, Velocity & Flow, Mitral valvular regurgitation, 4D flow MRI, Jet momentumQuantitative hemodynamic assessment of mitral valvular regurgitation (MVR) is critical for evaluating severity of the disease, but has been challenging with conventional echocardiographic and cardiac MRI techniques. 4D flow MRI is a promising tool that enables direct retrospective quantification of MVR hemodynamics. This study proposes a regurgitant flow momentum as a novel and reliable fluid dynamic parameter for MVR assessment using 4D flow MRI. The conservation characteristics of MVR jet flow momentum and its relationship with LA enlargement were investigated in 44 patients using 4D flow MRI and echocardiography.

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