Mindray DC-80A, Operator'S Manual

Page: 93 / 391

Image Optimization 5-13
5.4.1 Basic Procedures for Color Mode Imaging
1. Select a high-quality image during B mode scanning, and adjust to position the area of interest in
the center of the B mode image.
2. Press <Color> to enter B + Color mode. Roll the trackball to change the position and size of the
Region of Interest (ROI) and press the <Set> key to set.
3. Adjust the image parameters during scanning to obtain optimized images.
4. Perform other operations (e.g., measurement and calculation) if necessary.
5.4.2 Color Mode Image Parameters

In Color mode scanning, the image parameter area in the top-right corner of the screen displays
the real-time parameter values as follows:
Parameter F G PRF WF
Meaning Frequency Color Gain Pulse Repetition Frequency (PRF) Color Wall Filter

During Color mode imaging, the image optimizing menus for B mode and Color 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, the acoustic power is synchronous with that of B mode. Adjustment of the depth to
the B mode image will lead to corresponding changes in Color mode image.
5.4.3 Color Mode Image Optimization
Color Gain
Description Refers to the overall sensitivity to flow signals. This function is used to adjust the gain
in Color mode. The real-time gain value is displayed in the image parameter area in
the top-right corner of the screen.
Operations
Rotate the <Color> 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 increase the flow signal presented and noise. The signals may
be missing when the gain is adjusted too low.