Discordance between MRI and echocardiography in the assessment of mitral regurgitation severity: prediction of surgical response suggests mri may be more accurate.

Background The assessment of mitral regurgitation (MR) severity is often based on echocardiographic criteria and clinical assessment. MRI can also quantify MR severity, indirectly as the difference between left ventricular (LV) stroke volume and forward flow. In clinical practice these imaging modalities can be discordant. The purpose of this prospective, multicenter trial is to compare the two techniques in assessing the severity of MR.