Kamoen V, Calle S, El Haddad M, et al. - Researchers sought to determine the diagnostic as well as the prognostic worth of various color Doppler mitral regurgitation (MR) jet grading methods and compared them with quantitative grading of MR. In 476 MR patients, MR color Doppler jet was evaluated applying an ‘integrated’ eyeballing approach by estimating 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 reported, when evaluated by three echocardiographers. For all color Doppler approaches, there was a good intra-observer agreement. Findings demonstrated that the integrated eyeballing approach outperformed color Doppler quantification of the MR jet area and length. Overall, experts found that a good performance in predicting events in primary and secondary MR was conferred by color Doppler grading of the distal MR jet vs quantitative grading methods.