Radiology 2004; 232:18-37
Department of Radiology, Brigham and Women's Hospital
Harvard Medical School

Contrast-enhanced 16 -detector row CT coronary angiography in a patient who has undergone percutaneous transluminal coronary angioplasty with stent placement in right coronary artery (RCA). (a) Colored 3D volume-rendered view from right posterior oblique perspective reveals luminal narrowing (arrowhead) of artery proximal to the stent. (b) Maximum intensity projection and (c) multiplanar reformation in oblique coronal planes show patent stent lumen and mixed atherosclerotic lesion (arrow) with calcified and noncalcified components as the cause of high-grade (- 70%) stenosis proximal to the stent. (d) Conventional angiographic image in left anterior oblique projection confirms stent patency and presence of stenosis (arrow) but fails to elucidate nature of the lesion causing luminal narrowing. (Case courtesy of C. S. Soo , MD, HSC Medical Center , Kuala Lumpur , Malaysia)

(a) Conventional selective coronary angiogram and (b) contrast-enhanced fourdetector row CT coronary angiographic image, both shown in right anterior oblique projection, show hemodynamically significant stenosis (arrow) of left anterior descending coronary artery.

(a) Conventional selective coronary angiogram in right anterior oblique projection and (b) transverse thin-slab maximum intensity projection from 16-detector row coronary CT angiography (view from caudal) in a patient suspected of having CAD. AO = aorta, PA = pulmonary artery. CT coronary angiography (b) demonstrates high-grade (-90%) stenosis (lower arrow) in proximal left anterior descending coronary artery close to bifurcation of the first diagonal branch and a second (-70%) stenosis (upper arrow) in middle segment of the left anterior descending coronary artery close to bifurcation of the second diagonal branch. Both lesions (arrows) were confirmed on a. (Case courtesy of C.S. Soo, MD, HSC Medical Center, Kuala Lumpur, Malaysia)