Mitral regurgitation jet by color Doppler echo

Apical four chamber view showing LV (left ventricle), RV (right ventricle), RA (right atrium), LA (left atrium) and AML (anterior mitral leaflet) with a small mitral regurgitation (MR) jet into LA. MR jet is seen as a mosaic (multi colour) area within the left atrium within the color flow mapping. Mosaic color is due to aliasing as the MR jet velocity is much above aliasing velocity of the system. Severity of the mitral regurgitation can be assessed by the extend to which the jet extends into the left atrium. Other measures are the area of the jet, especially in comparison with the area of the left atrium. Larger the ratio, more severe the mitral regurgitation. AML is seen in the closed position between the LA and LV indicating that it is a systolic frame.