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Full Digital Color Doppler Ultrasonic Diagnostic Instrument (Vet) User’s Manual V1.00
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QMV Mitral valve volume QMV[mL]=4*DEV[cm/s]*DCT[s]
LAD Left Atrium inside diameter M mode distance measurement
AOD Aorta inside diameter M mode distance measurement
LAD/AOD Inside diameter ratio of left atrium to aorta LAD/AOD[no unit]= LAD [mm]/AOD [mm]
MAVO1 Aorta valve begin opening diameter M mode distance measurement
MAVO2 Aorta valve end opening diameter M mode distance measurement
AA Aorta posterior wall amplitude [mm or cm] M mode distance measurement
AVSV Aorta Valve Volume
AVSV[mL]=(MAVO1[cm]+MAVO2[cm])*ET
[s]*50+AA[cm]
LVMW Left Ventricle Muscle Weight [g]
LVMW[g]=1.04*[(IVSTd[cm]+LVIDd[cm]+
LVPWd[cm])
3
- LVIDd
3
[cm
3
]]-13.6
LVMWI Left Ventricle Muscle Weight index LVMWI[no unit]= LVMW[g]/BSA[m
2
]
4. Calculation formula
Abbreviation Detailed description Formula
EDV
End-diastolic left ventricular volume
[mL]
EDV[mL]=(LVIDd [mm])
3
/1000 (CUBE formula)
ESV
End-systolic left ventricular volume
[mL]
ESV[mL]= (LVIDs [mm])
3
/1000 (CUBE formula)
SV Stroke Volume [mL] SV[mL]= EDV[mL]- ESV[mL]
CO Cardiac Output [L/min] CO[L/min]= SV[mL]* HR[bpm]/1000
EF Ejection Fraction EF[No unit]= SV[mL]/ EDV[mL]
FS Fractional Shortening
FS[No unit]=(LVIDd[mm]- LVIDs[mm])/
LVIDd[mm]
SI Stroke Volume Index SI= SV[mL]/ BSA[m
2
]
CI Cardiac Index CI[No unit]= CO[L/min]/ BSA[m
2
]
MVCF
Mean velocity of circumferential fiber
shortening [circ/s] MVCF=(LVIDd[mm]-LVIDs[mm])/( LVIDd[mm]
*ET[ms]/1000)
BSA Body Surface Area [m
2
]
Two formulas to choose
Oriental: BSA=WT
0.425
*HT
0.725
*73.58/10000
Occidental: BSA= WT
0.425
*HT
0.725
*71.84/10000
LVMW Left Ventricle Muscle Weight [g]
LVMW[g]=1.04*[(IVSTd[cm]+LVIDd[cm]+LVP
Wd[cm])
3
- LVIDd
3
[cm
3
]]-13.6
LVMWI Left Ventricle Muscle Weight index LVMWI[No unit]= LVMW[g]/BSA[m
2
]
CA/CE Ratio of between A peak and E peak CA/CE[No unit]= CA[mm]/CE[mm]
LAD/AOD
Inside diameter ratio of left atrium to
aorta
LAD/AOD[No unit]= LAD [mm]/ AOD [mm]
AVSV Aorta Valve Volume [mL]
AVSV[ml]=(MAVO1[cm]+MAVO2[cm])*ET[s]*
50+AA[cm]
QMV Mitral valve volume [mL] QMV[ml]=4*DEV[cm/s]*DCT[s]
14.2.2 Left ventricle function measurement
The LV function measurement in M mode is based on EDV and ESV that be calculated by the short
axis diameter at the LV diastole and systole.
LV function measurement items include LVIDd and LVIDs and it can calculate the SV, FS, EF, CO,
MVCF, SI and CI.
Two kinds of LV Function formulas in M mode: TEICHHOLZ and CUBE.