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Fig. 2A —Planimetry of aortic valve area (AVA) performed after
identifying maximal aortic valve opening using 4D dynamic imaging (see Fig.
S1, cine CT, at
www.ajronline.org).
MDCT images show tricuspid valve in 79-year-old woman with moderate aortic
stenosis (aortic valve area, 1.1 cm2) (A and
C) and bicuspid valve in 53-year-old-man with severe aortic
stenosis (aortic valve area, 0.98 cm2) (B and D).
A and B were reconstructed with multiplanar reformations,
C and D with volume rendering using 1-mm slab.
