Figure 2b. Coronary artery anatomy at CT. In all figures, A = aorta, LA = left atrium, LV = left ventricle, P = pulmonary trunk. (a) Oblique volume-rendered image of the top of the heart shows the origins of the right (arrow) and left (arrowhead) main coronary arteries, which demonstrate high-attenuation calcifications. (b, c) Coronal oblique volume-rendered (b) and maximum intensity projection (c) images of the anterior heart show the right (arrow) and left (arrowhead) coronary arteries.