Does Cardiac Magnetic Resonance Imaging (CMR) have lower variability in valve regurgitation quantitation compared to Transthoracic Echocardiography (TTE)?
CMR may be superior to TTE for serial measurements of aortic regurgitation volume due to lower variability, but both modalities show variability in mitral regurgitation quantitation.
Compared with TTE, CMR has lower intraobserver and interobserver variabilities for RVol(AR), suggesting CMR may be superior for serial measurements. Although RVol(MR) is similar by TTE and CMR, variability in measured RVol by both approaches suggests that caution is needed in clinical practice.
Cawley et al. (Thu,) studied this question.