Mindray DC-80A, Руководство оператора

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Image Optimization 5-5
Depth
Description This function is used to adjust the sampling depth, the real-time value of which is
displayed in the image parameter area in the top-right corner of the screen.
Operations
Use the <Depth> deflector rod in the bottom-right part of the control panel to adjust the
depth.
The adjustable depth values vary depending on the probe types.
Effects
Increase the depth to see tissue in deeper locations, or decrease the depth to see
tissue in shallower locations.
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 “ ” symbols which are
displayed to the right of the image.
Operations Adjust the focus number using the [Focus Number] item on the touch screen or by the
mapping-menu 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.