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Measurement Formulas
LOGIQ 7/LOGIQ 7 Pro Advanced Reference Manual
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Direction 5116269-100 Rev. 2
TV SV [Tricuspid Valve]
Mode: CW:PW:VRCW:VRPW
Formula: {TV Ann Diam}^2*0.785*{TV VTI}
Needs measurement: TV Ann Diam [Tricuspid Valve], TV VTI [Tricuspid Valve]
Measured by: TV Trace [SDMANTRACE]
TVA (Vmax) [Tricuspid Valve]
Mode: 2D:CW:PW:VRCW:VRPW
Formula: 3.14/4*{RVOT Diam}^2*{RVOT Vmax}/{TV Vmax}
Needs measurement: RVOT Diam [Tricuspid Valve], RVOT Vmax [Tricuspid Valve], TV Vmax [Tricuspid
Valve]
Measured by: TV Vmax [AUTOCALC]
TVA (Vmax) [Tricuspid Valve]
Mode: 2D:CW:PW:VRCW:VRPW
Formula: 3.14/4*{RVOT Diam}^2*{RVOT Vmax}/{TV Vmax}
Needs measurement: RVOT Diam [Tricuspid Valve], RVOT Vmax [Tricuspid Valve], TV Vmax [Tricuspid
Valve]
Measured by: TV Trace [AUTOCALC]
TVA (VTI) [Tricuspid Valve]
Mode: 2D:CW:PW:VRCW:VRPW
Formula: 3.14/4*{RVOT Diam}^2*{RVOT VTI}/{TV VTI}
Needs measurement: RVOT Diam [Tricuspid Valve], RVOT VTI [Tricuspid Valve], TV VTI [Tricuspid Valve]
Measured by: TV Trace [AUTOCALC]
Vcf mean [Dimension]
Mode: MM:CM:AMM:CAMM:VRMM
Formula: ({LVIDd}-{LVIDs})/({LVIDd}*{LVET})
Needs measurement: LVIDd [Dimension], LVIDs [Dimension], LVET [Dimension]
Measured by: Vcf [MMTIMECALIPER]
Vcf mn (corr) [Dimension]
Mode: MM:CM:AMM:CAMM:VRMM
Formula: ({LVIDd}-{LVIDs})/({LVIDd}*({LVET}/sqrt({Time})))
Needs measurement: LVIDd [Dimension], LVIDs [Dimension], LVET [Dimension], Time [Dimension]
Measured by: Vcf [MMTIMECALIPER]
Table 2-11: Cardiac Calculation Formulas