Image Optimization 5-43
z Volume data: the image data set of a 3D object rendered from 2D image
sequence.
z 3D image: the image displayed to represent the volume data.
z View point: a position for viewing volume data/3D image.
z Section image: tangent planes of the 3D image obtained by algorithm. As shown
in the figure below, XY-paralleled plane is C-section, XZ-paralleled plane is
B-section, and YZ-paralleled plane is A-section. The probe is moved along the
X-axis.
z ROI (Region of Interest): a volume box used to determine the height and width of
scanning volume.
z VOI (Volume of Interest): a volume box used to determine the area of a sectional
plane for 3D imaging.
ROI and VOI
Before image acquisition 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 (cut plane) of VOI is inside ROI.
B image
O
Cut plane
z
ROI size and position
Z
View point
X
Y
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