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.
Evaluation of pulmonary regurgitation (PR) by ECG-gated cine phase contrast MR: MPA flow rate (Y-axis) versus time (X-axis). Flow above the baseline represents antegrade flow and flow below the baseline represents retrograde (regurgitation) flow.
