Clinical Research Directory

Inclusion Criteria: * Age 18-90 years of age * Suspected moderate or severe (2-3+ or more) aortic regurgitation, or moderate or more aortic stenosis on the basis of prior known clinical history, echocardiogram or cardiac MRI. Exclusion Criteria: * Acute traumatic cardiac injury * Aortic dissection or aortic root rupture * Congenital heart diseases such as patent ductus arteriosus, coarctation of aorta, ASD and VSD * Presence of A-V fistula or intracardiac shunts * Any contraindications to cardiac MRI including: * Patients with any MR-incompatible implant, including cardiac pacemakers or defibrillators, or older types of cerebral aneurysm clips. * Patients who weigh more than 440 lbs. or have a very wide waist circumference. * Patients with claustrophobia may have difficulty tolerating the exam.