Algorithms proposed by the Heart Valve Clinic International Database (HAVEC) group for disease staging and management in patients with aortic valve stenosis. Algorithms proposed by the Heart Valve Clinic International Database (HAVEC) group for disease staging and management in patients with aortic valve stenosis. AS indicates aortic stenosis; AVA, aortic valve area; AVR, aortic valve replacement; CMR, cardiac magnetic resonance; DSE, dobutamine stress echocardiography; ESE, exercise stress echocardiography; EF, ejection fraction; HG, high gradient; LF, low flow; LG, low gradient; MPG, mean pressure gradient; MSCT, multislice computed tomography; NF, normal flow; and PET, positron emission tomography. Raluca Dulgheru et al. Circ Cardiovasc Imaging. 2016;9:e004352 Copyright © American Heart Association, Inc. All rights reserved.