Fig. 1
From: Intracoronary injection of nitroglycerine can prevent unnecessary percutaneous coronary intervention
A Coronary angiography of a 74 year old man showing stenosis in the mid section of the left anterior descending artery that resolved after intracoronary nitroglycerine injection (B). C Coronary angiography of a 75 year old woman showing stenosis in the mid section of the left anterior descending artery that did not resolve after administration of intracoronary nitroglycerine (D)