Figure 1.

(A and B) Imaging of the cardiac venous system (CVS) by computed tomographic (CT) mapping of the coronary veins and its relations to coronary artery. Great cardiac vein crossing the left anterior descending (LAD) and left circumflex (LCx) arteries, forming a triangle. The relations of the vein and these arteries are highly variable. The anterior interventricular vein (arrows) courses superficial to the arteries in 60–70% of the population (A) and passes under both arteries in 20% of the population (B).³