Eric James Keller1, Susanne Schnell1, James C Carr1, Michael Markl1,2, and Jeremy Douglas Collins1
1Radiology, Northwestern University, Chicago, IL, United States, 2Biomedical Engineering, Northwestern University, Evanston, IL, United States
Abdominal 4D flow MRI is currently limited by long
acquisition times required to capture the wide range of velocities and flows
present in the abdomen with separate low and high velocity encoding gradient
(venc) acquisitions. By instead using a single 4D flow sequence with two
different velocity encodings (dual-venc), we were able to quantify abdominal hemodynamics with
similar accuracy in a total of 21% less time. Overall, this is
encouraging as it directly addresses scan time, a major limitation of 4D flow
MRI, increasing its clinical utility.
