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

Figure 1

Case 3: 3D volume-rendered coronary image showing a single coronary artery arising from the left coronary sinus (LCS). The right coronary artery (RCA) (red arrow) arises from the proximal left main coronary artery, and then it courses posterior to the aorta (retroaortic course) before it reaches the right interventricular groove. The left main coronary artery trifurcates and gives the left anterior descending artery (blue arrow), the ramus intermedius (yellow arrow), and the left circumflex artery (black arrow). AO: aorta; LA: left atrium; RA: right atrium; MPA: main pulmonary artery.