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CI
Cardiac Index
CI=CO(l/min)/BSA
MVCF
Mean Velocity of Circumferential Fiber
Shortening
MVCF(circ/s)=(LVIDd(cm)
–
LVIDs(cm))/
((LVIDd(cm)
×
ET(s))
Cube method
This measurement method approximates to the LV volume by measuring a cube.
Steps:
1.
Press the Measure key in the real time or frozen M 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 [Cube] on the pop-up menu and a marker displays on the image.
4.
Perform the LVIDd LVIDs 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
Left Ventricle/
Cube Method LVIDs
LV internal dimension at end systole
Refer to Section
8.4.2.1 Distance.
The system automatically calculates the following items according to the measurement results.
Calculation
Item
Description
Formula
EDV
End-diastolic Left Ventricular Volume
EDV(ml)=LVIDd
)
FS
Fractional Shortening
FS = 100%×(LVIDd(cm)- LVIDs(cm))/ LVIDd(cm)
ESV
End-systolic Left Ventricular Volume
ESV(ml)=LVIDs
)
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
MVCF
Mean Velocity of Circumferential Fiber
Shortening
MVCF(circ/s)=(LVIDd(cm)–LVIDs(cm))/
((LVIDd(cm)×ET(s))
8.5.3.8 Mitral Valve
Steps:
1.
Press the Measure key in the real time or frozen M mode, and the measurement menu displays
on
the top left of the screen.
2.
Select [MV] on the menu by moving the trackball and press Set to confirm.
3.
Select a sub-item, such as [EF] on the pop-up sub-menu and a marker displays on the image.
4.
Perform the measurement according to the following table and the measurement results displays
in the
result box.
Measurement Item
Measurement Sub-item
Measurement Method
EF
AC
Refer to Section 8.4.2.4 Slope Rate.
Mitral Valve
A/E
Refer to Section 8.4.2.1 Distance.