Mindray Z60W - PW;CW Mode Image Parameters; PW;CW Mode Image Optimization

Image Optimization 5-17
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:
Parameter
F
G
PRF
WF
SVD
SV
Angle
Meaning
Frequency
Gain
PRF
Wall Filter
SV Position
SV Size
Angle
 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
Description
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.
Operations
Rotate the [Gain/iTouch] knob to adjust the gain.
The adjusting range is 0-100.
Effects
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.
Baseline
Description
Refers to the area where the velocity is zero in the spectrum.
Operations
Press the <Baseline> key on the control panel and rotate the Multifunctional
Knob on the left to adjust.
Effects
To change the range of flow velocity to optimize the image.