Image Optimization 5-5
TGC
Description The system compensates the signals from deeper tissue by segments to
optimize the image.
There are 8-segment TGC sliders on the control panel corresponding to
the areas of the image.
Operations To increase the gain compensation in an area of interest, move the TGC
slider to the right.
To decrease the gain compensation in the corresponding area of interest,
move the TGC slider to the left.
About 1.5 seconds after the adjustment is complete, the TGC curve
disappears.
Effects Adjust the signal gain for a particular image area to achieve a balanced
image.
Acoustic Power
Description Refers to the power of ultrasonic waves transmitted by the probe, the real-
time value of which is displayed in the upper part of the screen.
Operations Adjust the acoustic power through the [A.Power] item on the touch screen.
The adjusting range is 3.2-100%.
Effects Generally, increasing the acoustic power will increase the brightness and
contrast of the image and the force of penetration.
Impacts You should perform exams according to actual situations and follow the
ALARA Principle.
Focus
Description
Refers to adjusting the focus of the ultrasonic beams, using the ā
ā
symbols which are displayed to the right of the image.
Operations Adjust the focus number using the [Focus Number] item on the touch
screen.
Use the <Focus> deflector rod in the bottom-right part of the control panel
to adjust the focus position.
In B mode, the available focus number can be switched between 1-4.
Effects The area that is focused will be of a higher contrast and resolution.
Impacts The greater the number of focal zones, the slower the frame rate.
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