The Ultrasonic Microsurgical Anatomical Comparative Study of the CHD Fetuses and Their Clinical Significance

Figure 4

Atrial septal defect (ASD) (37 w). (a) The left ventricular outflow tract echocardiography section. (b) The left ventricular outflow tract sectional anatomy. Aortic stenosis (AS) (39 w). (c) The left ventricular outflow tract echocardiography section. (d) The left ventricular outflow tract sectional anatomy. LV: left ventricle; RV: right ventricle; PFO: patent foramen ovale; AO: aorta; IVS: interventricular septum; LVOT: left ventricular outflow tract; PA: pulmonary artery.

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