Image Optimization 5-19
When you adjust the depth of the B mode image, related changes will occur in PW mode
image as well.
5.8.3 PW Mode Image Optimization
Gain
This function is intended to adjust the gain of spectrum map. The real-time
gain value is displayed in the image parameter area in the upper right corner
of the screen.
Rotate the [Gain/iTouch] knob to adjust the gain.
The adjusting range is 0-100.
Increasing the gain will brighten the image and you can see more received
signals. However, noise may also be increased.
Frequency
Refers to the operating frequency in PW mode of the probe, the real-time value
of which is displayed in the image parameter area in the upper left corner of
the screen.
Select the frequency value through the [Frequency] item in the image menu or
rotate the <Focus/Freq./THI> knob on the control panel.
Values of frequency vary depending upon the probe types.
Select the frequency according to the detection depth and current tissue
characteristics.
Effects
The higher the frequency, the better the resolution and sensitivity, and the
worse the force of penetration.
A. power
Refers to the power of ultrasonic wave transmitted by the probe, the real-time
value of which is displayed in the image parameter area in the upper left corner
of the screen.
Operation
Adjust through the [Acoustic Power] item in the image menu;
The adjusting range is 0%-100% and the adjusting level is 32.
Generally, increasing the acoustic power will increase the brightness and
contrast of the image as well as the force of penetration.
You should perform exams according to actual situation and follow the ALARA
Principle.
Baseline
Refers to the area where the velocity is zero in the spectrum.
Press the <Baseline> key on the control panel and rotate the Multifunctional
Knob on the left to adjust. The adjustment range is -4 to 4.
To change the range of flow velocity to optimize the image.
PW Steer
Description
This function provides adjustment on angles for sampling line.
Adjust through the [Steer] item on image menu.
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