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Knowledge of the dynamic changes of the aortic valve (AV) annulus may aid in the sizing and design of transcatheter valve prostheses. We assessed AV annulus distention in patients without AV disease and with severe AV stenosis (AS) using computed tomography (CT). Electrocardiogram-gated multislice CT scans of 15 patients without AV disease (age 53 ± 12 years) and 20 patients with severe AS (age...
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