Figure 9From: Echocardiographic assessment of ischemic mitral regurgitation Dense Doppler Signature in Severe MR. This continuous wave Doppler interrogation of an MR jet taken from the apical four chamber view shows a very dense Doppler profile, which is consistent with severe MR. The peak MR velocity is 4.5Â m/s, and this value would be used in the denominator of the calculation of EROA.Back to article page