Prevalence, Spectrum, and Outcomes of Single Coronary Artery Detected on Coronary Computed Tomography Angiography (CCTA)

Figure 6

Case 6: 3D volume-rendered coronary image showing a single coronary artery arising from the right coronary sinus (RCS) with a dual left anterior descending artery (LAD) variant. The right coronary artery (red arrow) has a normal course. The left circumflex artery (green arrow) arises from the proximal RCA, and then it has a retroaortic course before it reaches the left interventricular groove. The short segment of the LAD courses through the septum myocardium before it reaches the proximal interventricular groove (blue arrow). The long segment of the LAD (pink arrow) has a prepulmonic course before it reaches the distal interventricular groove. AO: aorta.