Dominant RCA

The coronary angiogram of the RCA is taken in the left anterior oblique projection showing the proximal vessel giving rise (in order of origin) to the branch to the right ventricular outflow tract (RVOT) (conal artery), and acute marginal branch (AM). The RCA then continues in the posterior aspect of the AV groove. The first branch to be given off is the PDA and then in this instance the vertical small branch is the AV nodal artery (AVn). Two large posterior LV branches course inferiorly on the posterior aspect of the left ventricle and the last small branch courses cranially to the left atrium as a left atrial branch.

Courtesy: Ashley Davidoff, M.D.