Kamoen V, Calle S, El Haddad M, et al. - Researchers sought to determine the diagnostic as well as prognostic worth of several color Doppler mitral regurgitation (MR) jet grading methods, and also compared them with quantitative grading of MR. They evaluated MR color Doppler jet in 476 MR patients employing an ‘integrated’ eyeballing approach by quantifying the color Doppler jet area, jet area/left atrium area and jet length and employing quantitative methods. A moderate inter-observer agreement for eyeballing color Doppler grade of MR was obtained, when evaluated by three echocardiographers. For all color Doppler approaches, good intra-observer agreement was reported. Overall, findings revealed good performance of color Doppler grading of the distal MR jet, vs quantitative grading methods, for predicting events in primary and secondary MR.