Cardiac magnetic resonance showed high reproducibility for quantifying mitral regurgitation, yielding comparable but typically lower regurgitant volumes than two-dimensional echocardiography.
Systematic Review
Does cardiac magnetic resonance imaging provide reproducible and comparable quantification of mitral regurgitation compared to two-dimensional echocardiography?
CMR provides highly reproducible quantification of mitral regurgitation, though values are typically lower than those obtained by 2D echocardiography, highlighting the need for standardized approaches.
In this review discuss the application of cardiac magnetic resonance (CMR) to the evaluation and quantification of mitral regurgitation and provide a systematic literature review for comparisons with echocardiography. Using the 2015 Preferred Reporting Items for Systematic Reviews and Meta-Analyses methodology, we searched Medline and PubMed for original research articles published since 2000 that provided data on the quantification of mitral regurgitation by CMR. We identified 220 articles of which 33 were included. Four main techniques of mitral regurgitation quantification were identified. Reproducibility varied substantially between papers but was high overall for all techniques. However, quantification differed between the techniques studied. When compared with two-dimensional echocardiography, mitral regurgitation fraction and regurgitant volume measured by CMR were comparable but typically lower. CMR has high reproducibility for the quantification of mitral regurgitation in experienced centres, but further technological refinement is needed. An integrated and standardised approach that combines multiple techniques is recommended for optimal reproducibility and precise mitral regurgitation quantification. Definitive outcome studies using CMR as a basis for treatment are lacking but needed.
Krieger et al. (Wed,) conducted a systematic review in Mitral regurgitation. Cardiac magnetic resonance (CMR) vs. Two-dimensional echocardiography was evaluated on Quantification of mitral regurgitation (mitral regurgitation fraction and regurgitant volume). Cardiac magnetic resonance showed high reproducibility for quantifying mitral regurgitation, yielding comparable but typically lower regurgitant volumes than two-dimensional echocardiography.