Doppler echocardiography and MR angiography for diagnosis of systolic murmurs in pulmonary sequestration

A, Meticulous Doppler examination of the aorta showed anteriorly directed arterial blood flow (arrow) arising from the descending aorta (triangle) in the retrocardiac region above the left hemidiaphragm. “Upper” and “Lower” indicate orientation. B, Enhanced MRA, short-axis view. A single large artery (arrow) runs leftward from the descending aorta (triangle). Abnormal vessels (asterisk) can also be observed to the left of the descending aorta in the retrocardiac region. H, Heart; Rt, right; Lt, left. C, Enhanced MRA, left anterior oblique view. Abnormal vessels (asterisk) can be observed to the left of the descending aorta (triangle). H, Heart. D, Enhanced MRA, right anterior oblique view. A single large artery (arrow) runs leftward and downward from the descending aorta (triangle). H, Heart.