Full Digital Color Doppler Ultrasonic Diagnostic Instruments (Vet) User’s Manual V1.01
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Left Ventricle/ Single
Plane Method
LVLd
Left Ventricle Diastolic
Major Axis
Refer to Section 10.5.1.1
Distance.
LVLd
LV long axis area at
end-diastole
Refer to Section 10.5.1.2 Area
and Circumference.
LVLs
Left Ventricle Systolic
Major Axis
Refer to Section 10.5.1.1
Distance.
LVALs
Left Ventricle Systolic
Area
Refer to Section 10.5.1.2 Area
and Circumference.
The system automatically calculates the following items according to the measurement results.
Calculation Item
Description
Formula
EDV
End-diastolic Left
Ventricular Volume(ml)
EDV(mL)= (8/3/π)×LVALd(
)
2
/LVLd(cm)
ESV
End-systolic Left
Ventricular Volume(ml)
ESV(mL)= (8/3/π)×LVALs(
)
2
/LVLs(cm)
SV
Stroke Volume
SV = EDV(ml) - ESV(ml)
EF
Ejection Fraction
EF=100%×SV(ml)/EDV(ml)
SI
Stroke Volume Index
SI=SV(ml)/BSA(
)
CO
Cardiac Output
CO(l/min)=SV(ml)× HR(bpm)/1000
CI
Cardiac Index
CI=CO(l/min)/BSA(
)
Bi plane
This measurement method calculates the LV volume by measuring the images covering the long axis
and the short axis of the left ventricle.
Steps:
1.
Press the
Measure
key in the real time or frozen B/Color/PDI mode, and the measurement menu
displays on the top left of the screen.
2.
Select [LV] on the menu by moving the trackball and press
Set
to confirm.
3.
Select [Bi Plane] on the pop-up menu and a marker displays on the image.
4.
Perform the LVIDd
LVIDs
LVAMd
LVAMs
LVALd
LVALs measurements one by
one and the measurement results displays in the result box.
Measurement Item
Measurement
Sub-item
Description
Measurement Method
Left Ventricle/
Bi Plane Method
LVIDd
LV internal dimension at end diastole
Refer to Section 10.5.1.1
Distance.
LVIDs
LV short axis diameter at end systole
LVAMd
LV short axis area at mitral value at
end diastole
Refer to Section 10.5.1.2
Area and Circumference
LVAMs
LV short axis area at mitral value at
end systole
LVALd
LV long axis area at end diastole
LVALs
LV long axis area at end systole
The system automatically calculates the following items according to the measurement results.
Attention:
You should input the height, weight and heart rate before performing the
cardiac measurement. Otherwise, CO, CI and SI cannot be calculated.
