7 3D/4D
Operator’s Manual 7 - 7
1. Select the proper probe and exam mode; make sure there is sufficient gel on the probe for
scanning.
2. Obtain a 2D image, and optimize the image if necessary.
3. Tap [3D] or press the user-defined <3D> key to enter Static 3D mode, and define the ROI and
curved VOI.
Methods to adjust the ROI:
– Under acquisition preparation status: Roll the trackball to change the ROI size, position
and curved VOI, press the right <Set> key to toggle among setting the ROI position, size
or curved VOI. Press the left <set> key to adjust VOI angle.
– Tap [Flip VOI] to flip VOI. Tap [Reset VOI] to reset the angle of VOI to the original
status.
– Enter touch screen mapping mode.
Draw a circle on the desired area. Move ROI over the circle to adjust the size and position
of ROI. Roll the trackball or press <Set> to adjust ROI.
Move the cursor over the VOI, and move the cursor to the desired area to adjust the VOI
curve.
To setting the ROI, make sure:
– Set ROI on the 2D image with the largest section area of the fetal face.
– Set ROI a little larger than the fetal head.
NOTE:
To define a ROI, please try to cut the useless data as to reduce the time for image storing,
processing and reconstruction.
4. Select the render mode, and set the quality and angle parameter.
1 ROI 2 Draw a circle here
3 ROI cover this area
1Cross cursor on the VOI curve 2 ROI
3
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