Mindray DP-50 Vet - Page 103

Image Optimization 5-35
Select [VOI] to turn it to “Off.” The ROI image is displayed on the screen. Roll the trackball to
observe the MPR.
 Accept VOI
1. This function is usually used for MPR observation and to determine the relative position
of the MPR to the VR.
2. Select [Accept VOI] to be “Off” on the menu.
3. Select the desired MPR by selecting [Current Window] to be [A], [B] or [C] or [VR].
4. Roll the trackball to view the current active MPR. The other two MPRs change
correspondingly.
In Accept VOI status, when the VR is active or the MPR which is perpendicular to the view
direction is active, the center point of the VR displays. Adjust the position using the trackball.
Image Rendering Parameters
In image viewing status, render the image by adjusting the relevant parameters.
Render setting parameters description:
Select [VR/MPR] on the soft menu to select VR or MPR parameter adjustments.
 If [VR] is selected, parameter adjustment is performed on the VR image.
 If [MPR] is selected, parameter adjustment is performed on the MPR.
Adjustable parameters are as follows:
Parameter
Description
Threshold
Function: to set the threshold for VR rendering. The VR is rendered using
the signal between the high and low thresholds.
When signals are received, from small to large, they are divided into
different levels assigned within the range of 0-100%. The threshold is a
selected range where the system filters out signals below it and above it
to render the VR image.
The lower threshold can eliminate lower range noises and echo, which
contributes to a clearer and smoother image.
Range: 0%-100%.
Available in Surface render mode only.
Smooth
Function: to set the smoothness of VR.
Selection: 0-10. 0 refers to no smooth effect, 0-10 represent 11 effects in
incremental order.
Tip: Insufficient smoothness can result in a fuzzy image, while too much
smoothness will lead to image distortion.
iClear
Enhances the B mode image profile for better boundary details.
Range: Off, 1-4.
Brightness
Function: to set the brightness of VR.
Range: 0%-100%. 0% represents the minimum brightness, while 100%
represents the maximum.
Contrast
Function: to set the contrast of VR.
Range: 0%-100%.
Opacity
Function: to set the transparency value for VR rendering.
Range: 0%-100%.
The lower the number, the more transparent the grayscale information.