Mindray DC-80A, Руководство оператора

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Image Optimization 5-79
Setting ROI
This function is used for setting the target.
Up to eight ROIs can be saved on the reference image, with the corresponding eight traces plotted
simultaneously on the graph. Each ROI display has a different color, and its corresponding trace data is
plotted using that same color.
There are two different methods for determining the shapes of the sample area: Standard ROI and
Freehand ROI.

Trace ROI
1. Touch [Trace ROI] on the touch screen.
2. Review the image to a desired frame.
3. Rotate the trackball to position the image display cursor over the reference image(s).
4. Press the <Set> key to fix the starting point.
5. Press the <Set> key, and roll the trackball to depict the ROI. When a suitable ROI has been drawn,
confirm the ROI by double clicking <Set> key, press <Clear> key to cancel the last point.
The system automatically links the start point to the end point by drawing a straight line between
them.

Ellipse ROI
1. Touch [Ellipse ROI] on the touch screen, when the cursor is evolved in the image review area, it
displays as a color-coded ellipse.
2. Review the image to a desired frame.
3. Use the trackball to position the caliper on the reference image at the start point. Press <Set> to fix
the start point.
4. Trace the outline of the desired ROI by moving the cursor with the trackball.
5. Press the <Set> key to fix the end point, and roll the trackball to depict the ROI. When a suitable
ROI has been drawn, confirm the ROI by double pressing <Set> key, press <Clear> key to cancel
the last point.

Delete ROI
Press <Clear> key to clear out the last ROI; touch [Delete All] on the touch screen to clear out all
ROIs.
The corresponding traces for the deleted ROIs are erased from the plot.
Motion Tracking
Click [Motion Tracking] (the button is highlighted) on the touch screen to turn on the function.
This function provides a motion compensated ROI as precise time-intensity information can be acquired
using active tracking. It can enhance the calculation accuracy as reducing the impact of probe or patient
respiratory movement.
Tips: Elliptical ROIs can be positioned in any manner that keeps their center within the image
boundaries. In the case that part of the ROI is outside the image boundary, only data from within the
image boundary is used for calculating the mean intensity value.
X Scale
Rotate the knob under [X Scale] on the touch screen to choose different value, so that the X scale
display manner will be changed. This function can be used to track detailed tissue information.
Export/Save Trace Data
1. Touch [Export] on the touch screen.
2. Select the drive and enter the file name in the displayed window.