Figure 4
From: Echocardiographic assessment of ischemic mitral regurgitation
MR quantification by ratio of maximal distal jet area to left atrial area. Assessment of MR severity by distal jet area involves tracing the jet area (dashed white line) in the apical four chamber view and comparing the ratio of jet area to the left atrial area (solid white line). See Tables 3 and 4 for MR severity grades corresponding to different jet area:left atrial area ratios.