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.
Plots are compared for biplane Simpson method and visual estimation for echocardiography (A), biplane Simpson method by echocardiography and gated single-photon emission computed tomography (SPECT) (B), biplane Simpson method by echocardiography and cardiovascular magnetic resonance (CMR) (C), and gated SPECT and CMR (D).
