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Figure 2


Fig. 1B —Three different examples of congenital vascular abnormalities of chest evaluated with 64-MDCT with use of automatic tube current modulation. Oblique coronal maximum-intensity-projection images (upper row) and transverse section images (lower row) of patients scanned at 80 kVp (A and B) and 100 kVp (C). A shows stenotic pulmonary artery (black arrowheads) in 6-month-old girl. Note difference in vessel caliber between right and left pulmonary arteries (white arrowhead). B shows left lower pulmonary vein (llPv) draining (black arrows) in right (rA) instead of left (lA) atrium in 2-year-old boy. ulPv = upper left pulmonary vein, rV = right ventricle, and lV = left ventricle. C shows tetralogy of Fallot with large septal defect (white arrows), overriding ascending aorta (aA), and stenotic pulmonary artery (Pa) in 6-month-old boy.