Full Digital Color Doppler Ultrasonic Diagnostic Instruments (Vet) User’s Manual V1.01
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10.6.3.7 FS
FS can be calculated by measuring LVIDd and LVIDs.
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 [FS] on the menu by moving the trackball and press
Set
to confirm. A marker displays on the
image.
3.
Perform the LVIDd
LVIDs measurements one by one and the measurement results display in the
result box.
Measurement
item
Measurement
sub-item
Description
Measurement
method
Fractional
Shortening
LVIDd
Left Ventricle internal diameter at end
diastole
Refer to
section10.5.1.1
Distance
LVIDs
Left Ventricle internal diameter at end
systole
The system automatically calculates the following items according to the measurement results.
Calculation item
Description
Formula
FS
Fractional Shortening
FS = LVIDd(cm)- LVIDs(cm)/ LVIDd(cm)
10.6.3.8 Cardiology Measurement in the M mode
Cardiology measurements in the M mode include left ventricle measurement, mitral valve measurement,
aorta measurement, ejection time measurement, LVMW measurement and HR measurement.
10.6.3.9 Left Ventricle
The methods for measuring left ventricle in the M mode are as follows:
● Teichholz method
● Cube method
Teichholz method
This measurement method approximates 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 [Teichholz] 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
Left Ventricle/
Teichholz Method
LVIDd
LV internal dimension
at end diastole
Refer to Section 10.5.2.1
Distance.
LVIDs
LV internal dimension
at end systole
The system automatically calculates the following items according to the measurement results.
Calculation
Item
Description
Formula
Attention:
You should input the height, weight and heart rate before performing the
cardiac measurement. Otherwise, CO, CI and SI cannot be calculated. You should
measure the ET, otherwise MVCF cannot be calculated.
