Fig. 3From: Intravascular ultrasound findings and stent implantation for a patient with coronary spastic angina at site of progressive atherosclerotic plaque and responded poorly to medical treatment: a case reportIVUS findings of the right coronary artery around the spastic segment. a: at the site of spasm, the minimal lumen area was 2.26 mm2; b: the vessel size of distal reference segment in RCA was about 13.47 mm2Back to article page