
Full Digital Color Doppler Ultrasonic Diagnostic Instrument (Vet) User’s Manual V1.00
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LVAMd
Mitral valve
horizontal left ventricular short
axis area, at end diastole [mm
2
or cm
2
]
B mode “Circumference/area” ellipse
measurement
LVIDd
Left Ventricular internal diameter, at end
diastole [mm or cm]
B mode distance measurement
LVALs
Left Ventricular long axis area, at end
systole [mm
2
or cm
2
]
B mode “Circumference/area” ellipse
measurement
LVAMs
Mitral valve horizontal left ventricular short
axis area, at end systole [mm
2
or cm
2
]
B mode “Circumference/area” ellipse
measurement
LVIDs
Left Ventricular internal diameter, at end
systole [mm or cm]
B mode distance measurement
HR
Heart Rate [bpm]
Key in
EDV
End-diastolic left ventricular volume [mL]
EDV[mL]=(8/3/π)*LVALd[mm
2
]
*LVAMd[mm
2
]/LVIDd[mm]/1000
ESV
End-systolic left ventricular volume [mL]
ESV[mL]=(8/3/π)*LVALs[mm
2
]
*LVAMs[mm
2
]/LVIDs[mm]/1000
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]
SI
Stroke Volume Index
SI=SV[mL]/ BSA[m
2
]
CI
Cardiac Index
CI[No unit]=CO[L/min]/ BSA[m
2
]
BSA
Body Surface Area [m
2
]
Calculation referring to the formula
3. Bullet volume formula
Abbreviation Detailed description
Algorithm or Operation
LVAMd
Mitral valve horizontal left ventricular short
axis area, at end diastole [mm
2
or cm
2
]
B mode “Circumference/area” ellipse
measurement
LVLd
Left Ventricular long axis diameter, at end
diastole [mm or cm]
B mode distance measurement
LVAMs
Mitral valve horizontal left ventricular short
axis area, at end systole [mm
2
or cm
2
]
B mode “Circumference/area” ellipse
measurement
LVLs
Left Ventricular long axis diameter, at end
systole [mm or cm]
B mode distance measurement
HR
Heart Rate [bpm]
Key in
EDV
End-diastolic left ventricular volume [mL]
EDV[mL]=(5/6)*LVLd[mm]*LVAMd[mm
2
]/1000
ESV
End-systolic left ventricular volume [mL]
ESV[mL]=(5/6)*LVLs[mm]*LVAMs[mm
2
]/1000
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]
SI
Stroke Volume Index
SI=SV[mL]/ BSA[m
2
]
CI
Cardiac Index
CI[No unit]=CO[L/min]/ BSA[m
2
]
BSA
Body Surface Area [m
2
]
Calculation referring to the formula
4. Modified Simpson formula
Abbreviation Detailed description
Algorithm or Operation
LVAMd
Mitral valve horizontal left ventricular short
axis area, at end diastole [mm
2
or cm
2
]
B mode “Circumference/area” ellipse
measurement