How can one differentiate between an atherosclerotic plaque and coronary artery vasospasm on an angiogram?
How can one differentiate between an atherosclerotic plaque and coronary artery vasospasm on an angiogram?
A plaque is an eccentric or concentric lesion with sharp edges, while a spasm is a fusiform lesion with smooth edges and a tapered transition. Nitroglycerin administration may help differentiate these two entities, which can be difficult to distin-guish from one another.