Mindray DP-50 Exp Vet, Operator'S Manual

Page: 82 / 343

5-14 Image Optimization
5.6 Color Mode Image Optimization
The Color mode is used to detect color flow information, and the color is designed to judge
the direction and speed of blood flow.
Generally, the color above the color bar indicates the flow towards the probe, while the color
below the color bar indicates the flow away from the probe; the brighter the color, the faster
the flow speed, while the darker the color, the slower the flow speed.
5.6.1 Color Mode Exam Protocol
1. Select a high-quality image during B mode scanning, and adjust to place the area of
interest in the center of the image.
2. Press <Color> to enter B+Color mode. Use the trackball and <Set> to change position
and size of the Region of Interest (ROI).
3. Adjust the image parameters during scanning to obtain optimized images.
4. Perform other operations (e.g. measurement and calculation) if necessary.
5.6.2 Color Mode Image Optimization

In PW/ Color mode scanning, the image parameter area in the upper left 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

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.
5.6.3 Color Mode Image Optimization
Frequency
Description Refers to the operating frequency in Color mode of the probe, the real-time
value of which is displayed in the image parameter area in the upper corner of
the screen.
Operation Adjust it through [Frequency] on the image menu or rotate the <Focus/ Freq./
THI> knob on the control panel.
Values of frequency vary by probe. Select the frequency value according to the
need of the detection depth and the current tissue characteristics.
Effects The higher the frequency, the worse the axial resolution, and the better the
force of penetration.
Color Gain
Description Refers to the overall sensitivity to flow signals, and 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 upper right corner of the screen.