[MR imaging of aortic arch anomalies--an analysis of MR visualization of ductus arteriosus].

MR imaging of 10 patients with aortic arch anomaly was performed on a 1.0 T system. Coronal and sagittal images with a 5 to 6-mm-thick slice were taken in each patient and the visibility of the ductus arteriosus (ductus ligament) was detected on the sagittal images including its anatomical connection between the pulmonary trunk and arch vessel. The result indicates that MR imaging is of great help for detection of the ductus in case of aortic arch anomaly.