5-50 Image Optimization
e
f
View Direction
a. Up/Down
b. Down/Up
c. Left/Right
d. Right/Left
e. Front/Back
f. Back/Front
Tap [Up/Down], [Left/Right] or [Front/Back] on the second page to select the direction of the figure a, c
and e.
Tap [Flip] on the first page to observe by the converse direction of the current direction, which is
equivalent of the 180°rotarion of current VOI, as shown in the figure b, d, e and f.
Adjust VOI
Adjusting the VOI box size and position is to select the volume data needed to restructure the 3D image
and improve the reconstruction effect.
VOI On
3D image (VR) image displays VOI information.
1. In image viewing status, tap [VOI] t
o be “On”.
2. Select a desired section plane by touching [A], [B] or [C] or [VR].
3. Roll the trackball to adjust VOI position, size and curved VOI, and press <Set> to toggle among the
adjusting status; or you can rotate <4D> knob on the control panel to adjust section image position.
VOI Off
3D image (VR) image displays ROI information.
Tap [VOI] to be Off, then the ROI image is displayed on the screen, roll the trackball to observe section
images.
Accept VOI
This function is usually used for section image observation and to determine the relative position of the
section image to the VR.
1. Tap [Accept VOI], or tap [VOI Fixed] under 3D/4D contrast imaging.
2. Select a desired MPR image by taping [A], [B] or [C].
3. Roll the trackball to view the current active section image, and the other section images change
correspondingly. Or you can rotate the
knob to adjust the relative position of section
image.
In Accept VOI status, when the 3D image is active or the section image which is perpendicular to the
view direction is active, center point of the 3D image displays, and you can adjust the position by rolling
the trackball.
The adjustment of Rendering Parameters
In image viewing status, you can render the image by adjusting the relevant parameters.
Tap [VR] or [MPR] on the touch screen to select the VR parameter or MPR parameter.
When [VR] button is highlighted in green, adjust parameters of 3D image (VR).
