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.
(a) Intravascular Ultrasound (IVUS) cross-section showing a 180° calcified plaque opposite to a side branch origin and producing shadow (asterisk). (b) Optical Coherence Tomography (OCT) cross-section of a different segment of the vessel showing an almost concentric calcified plaque visible as signal-poor regions with sharply delineated borders (white arrows).
