Fig. 3From: The impact of different geometric assumption of mitral annulus on the assessment of mitral regurgitation volume by Doppler methodMRvol calculated as EROA by RT3DE multiplied by the VTIMR. The 3D color Doppler data was manually cropped by the cross-sectional plane perpendicularly to the regurgitant jet direction up to the smallest cross-sectional area of the regurgitant jet. The EROA was determined using manual planimetry of the color Doppler flow signal from an en face view. Example of a MR patient: EROA = 0.28 cm2, VTIMR = 150 cm, MRvol = 0.28 × 150 = 42 mLBack to article page