Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Quantification of mitral regurgitant volume by 4D flow (top) and planar MRI (bottom). Methods of measurement include direct interrogation of the regurgitant jet (left, yellow lines) or indirect quantification by subtracting aortic flow (right, red lines) from stroke volume.
