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Measurement
STEP 2
Note: The ECG signal's amplitude may vary between patients due to different
skin moisture and other physiological parameters.
Adjust the ECG curve position
STEP 1
STEP 2
7.8
Measurement
7.8.1
Measurement Overview
There are two types of measurements and calculations: general measure-
ment and special measurement.
Note: In order to guarantee the interested area from any miscalculation due to
the measurement value in the measuring process, and therefore we adjust the
parameters to get the best image quality for measurement.
Note: During the measurement of carotid artery, to obtain the accurate Dop-
pler blood flow measurement, we should keep sampling angle at 60 degrees.
Reading errors occur more often when the Doppler angle is below or above 60
degrees.
Note: If the image is not frozen or the measurement mode is changed in the
measuring mode, the measurements and calculations data will disappear from
the screen, and the General measurement data will not be saved (Special mea-
surement data will be saved in the worksheet and the report).
Note: If the system is suddenly shut down in the measuring process, the mea-
surement data will not be saved.
Note: In general, the user can carry out the functions of measurements and cal-
culations in real-time, zoomed or frozen image, but in M mode and PW mode,
the measurement function cannot be implemented in the real-time image, for
which the image shall be frozen first.
Rev 1.00
Select the assignable button Gain to adjust the amplitude of the
ECG curve.
Press Physic key on the control panel.
Adjust the assignable button Position to move the ECG curve verti-
cally.
Chapter 7 - System Operation
177
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