5-14 Image Optimization
5.4.2 Color Mode Image Optimization
In Color mode scan, the image parameter area on the left side of the screen displays the real-time
parameter values as follows:
Meaning Frequency Color Gain Color wall filter Pulse Repetition Frequency PRF
During color mode imaging, menus of image optimizing for B-Mode and M-Mode are displayed on the
touch screen at the same time. You can switch between the 2 modes by clicking the mode tabs.
In Color Mode, acoustic power is synchronous with that of B Mode. Adjustment of the depth or zoom to
the B Mode image will lead to corresponding changes in Color Mode image.
5.4.3 Color Mode Image Parameter
Color Gain
Description
Refers to the overall sensitivity to flow signals. The real-time gain value is displayed in
the image parameter area in the left corner of the screen.
Operation Rotate the <C> knob clockwise to increase the gain, and anticlockwise to decrease.
Impacts Increasing the gain will increase the flow signal presented as well as noise, while the
signals may be missing when the gain is adjusted too low.
ROI Adjustment
Description To adjust the width and position of ROI in Color mode.
Operation When the ROI box is solid line, roll the trackball to change its position.
When the ROI box is dotted line, roll the trackball to change the size.
Press <Set> to switch between the solid line and the dotted line status.
Impacts
The larger the ROI box is, the lower the frame rate becomes, and the lower the
resolution and color sensitivity will be.
Image quality
Description
Refers to the transmitting frequency in Doppler mode of the probe, the real-time value
of which is displayed in the image parameter area in the left corner of the screen.
Operation
Rotate the knob under the [Image Quality] on the touch screen to select the different
fundamental wave value.
The adjusting range of basic frequency values can be divided into penetration
preferred (Pen), general mode (Gen), resolution preferred (Res). Please select the
frequency according to the detection depth and current tissue features.
B/C Align
To set and constrain the maximum width of the B mode image to that of the Color ROI.
Tap [B/C Align] on the touch screen.
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