ARCAPA: 4D-flow cardiovascular magnetic resonance versus cardiac CT

Abstract

A 36-year-old asymptomatic woman underwent 4D-flow cardiac magnetic resonance (CMR) after an abnormality was observed on electrocardiogram (negative T-waves in V1-V3), to rule out cardiomyopathy (1.5T CMR, optima-450W-GE, 4D-flow; Gadovist gadolinium, 0.15 mmol/kg; matrix, 172 × 172; FOV, 42; VENC, 150 cm/s; bandwidth, 62.50; NEX, 4; voxel size, 2.4 × 2.4 × 2.4mm) (figure 1A-C and video 1 and video 2 of the supplementary data). This showed that the right coronary artery (RCA) had an anomalous origin from the pulmonary artery (ARCAPA), with coronary artery ectasia. Cardiac computed tomography (CT) was then performed to confirm the diagnosis and give a more precise anatomic assessment (RevolutionTM-CT256-GE, USA; contrast, Iopamidol 370 mg/mL) (figure 1D-G). Here we compare the images from the 2 techniques of this rare congenital anomaly.