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8.5.3.9 Aorta
Ratio between left atria diameter and aortic diameter
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 [AV] on the menu by moving the trackball and press Set to confirm.
3.
Select [LAD/AOD] on the pop-up menu and a marker displays on the image.
4.
Perform two distance measurements for the diameters of LAD and AOD and the
measurement results displays in the result box.
Value outflow
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 [AV] on the menu by moving the trackball and press Set to confirm.
3.
Select [AVSV] on the pop-up 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 Description
Measurement Method
DEV
Minimum flow of end diastole Refer to Section 8.4.2.4 Slope Rate.
DCT
Descending Time
Refer to Section 8.4.2.2 Time.
8.5.3.10 Ejection Time
Ejection time measurement in the M mode is the same as time measurement in the general M mode
measurement. For details, refer to Section 8.4.2.2 Time.
8.5.3.11 Left Ventricle Mass Weight
LV mass weight can be calculated by measuring LVPWd, LVSTd and LVIDd.
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 [LVMW] on the menu by moving the trackball and press Set to confirm. A marker displays
on the
image.
3.
Perform the LVPWd IVSTd LVIDd measurements one by one and the measurement results
displays
in the result box.
Measurement
Item
Measurement
Sub-item
Description
Measurement
Method
LVPWd
LV posterior wall thickness at end
diastole
IVSTd
Interventricular septal thickness at
end diastole
Left Ventricle Mass
Weight
(LVMW)
LVIDd
LV internal dimension at end diastole
Refer to Section8.4.2.1
Distance.
The system automatically calculates the following items according to the measurement results.
Calculation Item Description
Formula
LVMW
Left Ventricular Mass Weight
LVMW(g) = 1.04×