Multimodality Evaluation of Left Ventricular Remodeling In Mitral Regurgitation: A Pilot Study

Inclusion Criteria: * Age \>= 18 * Male or Female * A diagnosis of severe chronic primary mitral regurgitation * Undergoing isolated robotic mitral annuloplasty at Mayo Clinic Rochester * Patients must have the ability to consent or have an appropriate representative available to do so. Exclusion Criteria: * Prior valve intervention, * Concomitant valve surgery at the time of mitral annuloplasty (e.g. tricuspid annuloplasty, aortic valve replacement). * Concomitant \>= moderate regurgitation or stenosis in any other valve by preoperative echocardiography * History of prior myocardial infarction * History of cardiomyopathy unrelated to mitral regurgitation (e.g. dilated, hypertrophic, infiltrative) * Pregnancy. Women of childbearing potential will be verbally screened by clinical staff during as part of routine pre-MRI evaluation. If a subject is unsure whether they could be pregnant, a negative pregnancy test will be performed prior to scanning. * Implantable devices that would be a contraindication to MRI * Severe allergy to gadolinium MRI contrast