Here we present the case of a patient studied with multi-detector computed tomography (MDCT). Due to a severe three-vessel coronary artery disease he underwent coronary artery by-pass graft surgery. Two years later because of dyspnea and chest pain he was referred to have coronary computed tomography angiogram. We describe the coronary artery findings as well as the presence of a Vieussens’ arterial ring, which is not commonly visualized by traditional angiography. In the medical literature Vieussens’ arterial ring cases described by MDCT are extremely rare. This case shows how MDCT can be crucial in correctly understanding the anatomy of coronary artery disease patients.