MORPHOLOGY AND COMPOSITION OF ADVANCED CORONARY PLAQUES IN HISTOLOGY PREDICT THE DELINEATION OF THE OF NAPKIN RING SIGN IN CORONARY CT ANGIOGRAPHY

A plaque with a low attenuation core and a high attenuation rim has been termed napkin ring sign (NRS) in coronary CT angiography (CCTA). The NRS has been shown to be a highly specific yet poorly sensitive marker of advanced atherosclerotic lesions. We sought to identify histologic characteristics