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