5-42 Image Optimization
MultiPlaner Rendering (MPR): a tangent plane of the 3D image that obtained by algorithm.Of
which, XY-paralleled plane is C-plane, XZ-paralleled plane is B-plane, and YZ-paralleled plane
is A-plane.YZ-paralleled plane is B-section. The probe is moved along the X-axis.
ROI (Region of Interest): a volume box used to determine the height and width of scanning
volume.
VOI (Volume of Interest): a volume box used to display 3D image (VR) by adjusting interesting
region in MPR.
ROI and VOI
After the system enters 3D/4D imaging, a B image with ROI displays on the screen. A line (shown in
the following figure) that shows the upper edge position of VOI is inside ROI.
B
image
ROI
Cut plane
ROI adjustment: roll the trackball to change the ROI size and position, press <Set> to toggle
between setting the size (dotted line) and position (solid line).
Curved VOI adjustment: change the curved shape of the nearest VOI section (front section), to
facilitate observation for the interested volume data.It can be adjusted both in acquisition
preparation status, and in A, B, C sections of review/ 4D imaging status, while a triangle of
control point on the curved VOI is displayed.
Depending on the view direction, the orientation and the shape (line or dot) of curved VOI vary:
Z
View point
X
Y
1
2
3
4
5
6
7
8
