Circumflex artery arising from RCA with a retro-aortic course

All congenital anomalies need special attention, especially in terms of depicting the arteries in their entirety. The retro-aortic course especially creates problems and we've seen how the use of individual arterial tracing either for post-CABG situations or with anomalies helps.

Here is a case where the use of thick MIPs (Fig. 1) and a little more attention to cutting and editing (Figs. 2-4) helps as well. The scan is otherwise normal, but shows the CX arising from the right coronary cusp and coursing to the AV groove via retro-aortic course.