Left-Sided Patent Ductus Arteriosus in a Right-Sided Aortic Arch

Figure 1

Axial half-Fourier acquisition single shot turbo spin echo images (images (a)–(f)) show the PDA (white arrow) coming off the left brachiocephalic artery and draining into the distal pulmonary trunk. 3D volume-rendered image (image (g), see Supplementary Video 1 in Supplementary Material available online at http://dx.doi.org/10.1155/2014/896071) demonstrating the PDA originating from the left brachiocephalic artery and draining into the distal pulmonary trunk. Maximum intensity projection of the time-resolved MRA (images (h) and (i), Supplementary Video 2), the PDA is not visible during the pulmonary arterial phase (h) but fills once contrast enters the right sided aortic arch during the systemic arterial phase ((i), arrow). Ao: aorta, : left brachiocephalic artery, LPA: left pulmonary artery, RPA: right pulmonary artery, SVC: superior vena cava, Tr: trachea, MPA: main pulmonary artery, RA: right atrium, and RV: right ventricle.

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