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LVAMs
LV short axis are at mitral value at end systole Refer to Section 8.4.1.2
Area and Circumference
The system automatically calculates the following items according to the measurenment results.
Calculation Item
Description
Formula
EDV
End- diastolic Left
Ventricular Volume
EDV(ml)=(5/6/ )
×
LVLd(
)
×
LVAMd(
)
ESV
End- systolic Left
Ventricular Volume
ESV(ml)=( 5/6/ )
×
LVLs(
)
×
LVAMs(
)
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( )
Mod.Simpson
This measurement method calculates the LV volume by using the LV long axis view, the LV short axis at
the level of the mitral value and the LV short axis view at level of the papillary muscles.
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 [Mod.Simpson] on the pop-up menu and a marker displays on the image.
4.
Perform the LVLd LVLs LVAMd LVAMs LVAPd LVAPs 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.
LVAMd
LV short axis area at mitral value at end
diastole
LVAMs
LV short axis area at mitral value at end
systole
LVAPd
Area of LV short axis view at the level of
papillary muscles at end diastole
Left Ventricle/
Mod. Simpson
Method
LVAPs
Area of LV short axis view at the level of
papillary muscles 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)=LVLd( )/9
×
ESV
End- systolic
Left
Ventricular
Volume
ESV(ml)=LVLs ( )/9
×
SV
Stroke
SV = EDV(ml) - ESV(ml)