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.
Coronary angiography at 30 degrees left anterior oblique and 20 degrees right anterior oblique. (A) Poor opacification of a dilated and tortuous right coronary artery (RCA) shows a patent vessel with extensive posterior and apical collateralization. (B) Retrograde filling of the left anterior descending artery and main pulmonary artery are suggested on delayed imaging after contrast injection of the RCA.
