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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 9. FAST Echo algorithm applied to a fetus with tetralogy of Fallot at 33 weeks of gestation.

Figure 9

Placement of Line 1 shows evidence of pulmonic stenosis with an abnormally thickened valve. Placement of Line 2 shows the overriding aorta. Placement of Line 3 shows an abnormal four-chamber view with a large ventricular septal defect. AO, aorta; P, pulmonary artery; SVC, superior vena cava; VSD, ventricular septal defect.