480 Performance Of CT-based Aortic Valve Area For Assessment Of Aortic Stenosis

Abstract

Introduction: 40% of patients with severe aortic stenosis (AS) have discordant or low-gradient AS raising uncertainty about the actual AS severity. Computed Tomography (CT) is guideline endorsed to aid in such cases, with aortic valve calcification (AVC) considered a robust arbiter of AS severity. The performance of different CT derived aortic valve areas (AVA) is less well studied.