Conclusions
D-TGA patients who do not have reverse differential cyanosis must be investigated for aortic arch anomalies, particularly AORSA from the pulmonary circulation. Because the full course of an AORSA is difficult to visualize using TTE, the diagnosis is traditionally made by CT or invasive angiography. We present and recommend a modified echocardiographic imaging plane to visualize both the proximal and distal course of an AORSA, ultimately allowing for safe and non-invasive diagnosis.