This study aims to evaluate whether baseline 18F-sodium fluoride uptake activity at aortic valve could predict aortic stenosis progression in moderate aortic stenosis. Patients with moderate aortic stenosis are enrolled and underwent baseline evaluation including 18F-sodium fluoride PET/CT. After 1 year, all the participants underwent follow-up echocardiography. The study design is an observational trial. Primary endpoint was a change in mean pressure gradient along the aortic valve as assessed by echocardiography at 1 year. Secondary endpoints include changes in aortic valve area, and symptom occurrence.
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mean PG
Timeframe: AS severity progression after 1 year