Page 71 of 101
Otherwise, CO, CI and SI cannot be calculated.
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
LVIDd
LV internal dimension
at end diastole
LVIDs
LV short axis diameter at end systole
Refer to Section
8.4.1.1 Distance.
LVAMd
LV short axis area at mitral value at
end diastole
LVAMs
LV short axis area at mitral value at
end systole
LVALd
LV long axis area at end diastole
Left Ventricle/
Bi Plane
Method
LVALs
LV long axis area at end systole
Refer to Section 8.4.1.2
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
EDV(ml)=(8/3/ )
×
LVAMd(
)
×
LVALd(
)/LVIDd(cm)
ESV
End- systolic Left
Ventricular Volume
ESV(ml)=( 8/3/ )
×
LVAMs(
)
×
LVALs(
)/LVIDs(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( )
Bullet
This measurement method calculates the LV volume by measuring the image covering the long axis and the
short axis of the left ventricle at level of the mitral value.
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 [Bullet] on the pop-up menu and a marker displays on the image.
4.
Perform the LVLd LVLs LVAMd LVAMs measurements one by one and the measurement results
displays in the result box.
Measurement
Item
Measurement
Sub-item
Description
Measurement Method
LVLd
LV long axis length at
end diastole
LVLs
LV long axis length at
end systole
Refer to Section
8.4.1.1 Distance.
Left Ventricle/
Bullet Method
LVAMd
LV short axis are at mitral value at end diastole