🩺 **TOF in Fetus** 🩺 Perimemberanous malalignment Ventricular Septal Defect (VSD) with overriding of aorta Small Pulmonary Artery**: Measured Z-score ranges from 3.8 to 4.8, indicating significant narrowing compared to normal fetal heart measurements. Increased Velocity Across Pulmonary Valve**: 154 cm per sec, suggesting obstruction or narrowing or stenosis at the pulmonary valve.