5-16 Image Optimization
CW Sampling Line
Adjustment
Angle
CW Focus Depth
3. Set the position of the sample line by moving the trackball left and right, and set the SVD
by moving the trackball up and down, adjust the angle and SV size according to the
actual situation.
4. Press <PW> or <Update> to enter PW/CW mode again and perform the examination.
You can also adjust the SV size, angle and depth in real-time scanning.
5. Adjust the image parameters during PW/CW mode scanning to obtain optimized image.
6. Perform other operations (e.g. measurement and calculation) if necessary.
5.8.2 PW/CW Mode Image Parameters
In PW/CW mode scanning, the image parameter area in the upper right corner of the screen
displays the real-time parameter values as follows:
When you adjust the depth of the B mode image, related changes will occur in PW/CW
mode image as well.
Most of the parameters are the same for the PW mode and CW mode, so parameters of
the both are combined together to be introduced here.
5.8.3 PW/CW 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.
Increasing the gain will brighten the image and you can see more received
signals. However, noise may also be increased.
Frequency
Description 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.
Operation 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.
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