Siemens syngo CT 2005C - Manual (Page 246)

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syngo 3D
Editing
A common problem in evaluating medical images is
that areas relevant to an examination are hidden by
other structures, especially bones. The necessary
image information is contained in the volume data set
but must be made visible with suitable editing steps.
1. VOI mode: With a Volume of Interest (VOI), you
extract a volume of diagnostic interest by limiting
the volume to be reconstructed to a partial volume.
You can extract a VOI (volume of interest) in one of the
following ways:
• Position and differentiate a cuboid VOI (VOI Clipbox)
• Draw a freehand VOI (VOI Punch Mode)
2. Clip planes: Clip planes can also be used for hiding
parts of the data set.
Sometimes it is useful to use only a part of the volume
for projection. The sub area is defined by the two par-
allel intersection planes (“separation plane“). The dis-
tance between these planes is the slice thickness to be
defined. For example, you can avoid cutting out inter-
fering structures; (MIP Thin, VRT Thin/Clip).
C2-025.630.01.01.02_APPLICATIONGUIDE_SPIRIT.book Page 246 Friday, April 8, 2005 9:55 AM