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By using electron beam computed tomography (EBT) planimetry the aortic valve area (AVA) can be measured. ( A) AVA measured with EBT correlate well with those assessed with transthoracic echocardiography (TTE) (r = 0.60, P < 0.01). (B) AVA measured with EBT is larger on average than AVA assessed with TTE, as is confirmed with Bland–Altman analysis, exhibiting a mean difference of 0.51 ± 0.46 cm2. – – – = 95% confidence interval
