Fig. 1. 58-year-old woman with tobacco use who presented with chest pain radiating to back and was scanned urgently to exclude aortic dissection (patient 1 in Table 3).

A, Color and gray-scale CT–myocardial perfusion imaging showed significant lateral wall hypoperfusion (arrows).

B and C, Cardiac CT (B) showed 90% obtuse marginal stenosis (asterisk), which was confirmed by invasive angiography (asterisk, C); stent was placed.