Coronary Heart Disease The left coron() (LAD)and circumflex(Cx)arteries. ● The right coronary artery (RCA)courses in the right atrioventricular groove. (2)Technique 10 Coronary angiography Coronary CT angiography Coronary MR angiography (3)Coronary artery spasm 20 ，Caob点2 of e ooray c8 Coronary arteriography reveals a coronary arterial stenosis or occlusion which spontaneously resolves or is allevlaed by nrogrycer and o2 Coronary Heart Disease (1) coronary arteries anatomy ⚫ The left coronary artery usually divides into the left anterior descending (LAD) and circumflex (Cx) arteries. ⚫ The right coronary artery (RCA) courses in the right atrioventricular groove. (2) Technique ⚫ Coronary angiography ⚫ Coronary CT angiography ⚫ Coronary MR angiography (3) Coronary artery spasm ⚫ Coronary artery spasm is dynamic narrowing of the coronary causing reduction of blood flow and angina pectoris. ⚫ Coronary arteriography reveals a coronary arterial stenosis or occlusion which spontaneously resolves or is alleviated by nitroglycerin and other vasodilators. 15’ 10’ 20’