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. Author manuscript; available in PMC: 2012 Apr 1.
Published in final edited form as: Ultrasound Obstet Gynecol. 2011 Mar 2;37(4):423–431. doi: 10.1002/uog.8840

Figure 11. FAST Echo algorithm applied to a fetus with transposition of great vessels at 20 weeks of gestation.

Figure 11

The four-chamber view appears normal (Line 3). In the longitudinal view of the ductal arch, the pulmonary artery and ductus arteriosus are not visualized. The three-vessels and trachea view (Line 1) is abnormal, and shows only the aorta (arising from the right ventricle) and superior vena cava. After placement of Line 2, the pulmonary artery (confirmed by its bifurcation) is seen exiting the left ventricle. AO, aorta; PA, pulmonary artery; RV, right ventricle; SVC, superior vena cava.