Figure 4From: Partial anomalous pulmonary venous return and atrial septal defect in adult patients detected with 128-slice multidetector computed tomography An inferior sinus venosus atrial septal defect (ASD). A young male patient underwent preoperative multidetector computed tomography angiography, which revealed a large multifenestrated inferior sinus venosus ASD in axial (a) and sagittal (b) images. RA = right atrium, LA = left atrium, IVC = inferior vena cava.Back to article page