Mindray DC-80A, Operator'S Manual

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Image Optimization 5-21
Meaning Frequency Gain PRF Wall Filter SV Position Angle

During PW/CW mode imaging, the image optimizing menus for B mode and PW/CW mode are
displayed on the touch screen at the same time. If Color mode (Power mode) is also working,
menus for certain modes will be displayed on the touch screen synchronously, and you can switch
between them by clicking the mode tabs.

When you adjust the depth of the B mode image, related changes will occur in the PW/CW mode
image as well.

Most of the parameters are the same for the PW mode and CW modes, so parameters of both are
combined together to be introduced here.
Only phased and pencil probes support CW mode.
5.6.3 PW/CW Mode Image Optimization
Gain
Description
This function is intended to adjust the gain of the spectrum map. The real-time gain
value is displayed in the image parameter area in the top-right corner of the screen.
Operations
Rotate the [PW] knob clockwise to increase the gain, and counter-clockwise to
decrease it.
The adjusting range is 0-100 in increments of 2.
Effects Increasing the gain will brighten the image and you will see more received signals.
However, noise may also be increased.
SV
Description To adjust the SV position and size of sampling in PW mode, the real-time value of SV
and SVD are displayed in the image parameter area in the top-right corner of the
screen.
SV size
Rotate the knob under [SV] or the mapping-menu item on the touch screen to adjust
the SV size.
Value: 0.5-20 mm.
SVD Roll the trackball to select the SV depth.
Effects The smaller the SV size, the more accurate the result. More details are obtained when
selecting a large SV size.
CW Focus Position
Description
To adjust the CW mode SVD. The real-time focus position value is displayed in the
image parameter area in the top-right corner of the screen.
Operation Roll the trackball to select the focus depth.
Image Quality
Description Refers to the operating frequency of the probe in PW mode, the real-time value of
which is displayed in the image parameter area in the top-left corner of the screen.