Length of left anterior descending coronary artery in relation to right & left dominancy: A retrospective CT coronary angiographic study

Abstract

The arterial blood supply to the heart is achieved by two coronary arteries and their branches. The right & left coronary arteries arise from aortic sinuses of valsalva at the beginning of ascending aorta and then descend in right and left atrioventricular grooves respectively. The left anterior descending and circumflex arteries are the main branches of the left coronary artery whereas the acute marginal and posterior interventricular arteries arise from the right coronary artery. The term dominance is used to describe the anatomical pattern of the coronary arteries; the dominant vessel is the one that supplies the posterior diaphragmatic portion of the interventricular septum and the diaphragmatic portion of the left ventricle. So the dominant vessel refers to the coronary artery which gives the posterior descending artery