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Fig. 1 | Cardiovascular Ultrasound

Fig. 1

From: The impact of different geometric assumption of mitral annulus on the assessment of mitral regurgitation volume by Doppler method

Fig. 1

QPD calculations of MRvol assuming that the MA is ellipse geometry. a The diameter of LVOT was measured in the PLAX view, and the CSALVOT was derived as 0.785 d2. d LVOT pulsed Doppler was traced to obtain the VTILVOT. Thus, SVLVOT = 0.785 d2 × VTILVOT = 0.785 × 2.082 × 13.4 = 45.51 ml. b and c The diameter of MA was measured in the A4C and A2C view. The CSAMA was derived as 0.785 × a × b. e MA inflow pulsed Doppler was traced to obtain the VTIMA. Thus, SVMA = 0.785 × a × b × VTIMA = 0.785 × 3.33 × 2.65 × 13.1 = 90.75 ml. In this example of MR, MRvol = SVMA - SVLVOT = 90.75–45.51 = 45.24 ml

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