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Figure 12 Cardiac Computed Tomography of Coronary Sinus

(Left) Typical configuration of major cardiac veins. The volume-rendered computed tomography (CT) data show the anterior interventricular vein (AIV) draining into the great cardiac vein (GCV), which in turn becomes the coronary sinus (CS) upon receiving additional lateral vein branches. The posterior interventricular vein (PIV) is also noted. (Middle) Coronary sinus in a curved multiplanar CT format. This mode of rendering isotropic CT data allows for segmentation of the coronary sinus along its entire length (arrows). The arrowhead indicates the anterior interventricular vein. (Right) Coronary artery and coronary sinus anatomic relationship. Both the coronary sinus (arrow) and left circumflex coronary artery (arrowhead) lie in the atrioventricular groove, with the circumflex artery lying underneath the coronary sinus in this patient. The potential for myocardial ischemia induced by extrinsic compression from an overlying venous device exists. Ao = aortic valve, LV = left ventricle.