Coronary artery anomalies overview: The normal and the abnormal

Figure 4 High take-off of right coronary artery in a 67-year-old man with equivocal exercise stress test[57]. Maximum intensity projection coronary CT angiogram (A) and three-dimensional volume-rendered CT reconstruction (B). Aortic step (white arrow) is seen to be the origin of RCA; RCA runs closely parallel to the proximal aorta (Ao) behind the pulmonary artery (PA). A: Regular position of left ostium; B: High position of right ostium; C: Schematic representation of high take-off. R: Right sinus of Valsalva; L: Left sinus of Valsalva; N: Non-coronary sinus; RCA: Right coronary artery; CT: Computed tomography.