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using VOXEL_PROJ to obtain "thick slice" [message #36860] Wed, 29 October 2003 17:08
edwardg is currently offline  edwardg
Messages: 5
Registered: August 2003
Junior Member
Hi all,

I spent the last few hours futzing around with VOXEL_PROJ, and have
finally figured out how to get it to return a maximum intensity projection
of my data for an oblique view (specified in terms of the transformation
matrix !P.T). Looking at the rather paltry documentation for VOXEL_PROJ,
i noticed that the default is for the function to perform "average
intensity projection" when both the MAXIMUM_INTENSITY and RGBO keywords
are not set. In conjunction with the CUTTING_PLANE keyword, I was
thinking this may be useful for obtaining a thick slice from an image
volume (one in which a single voxel in the slice may encompass several
voxels in the source dataset). As opposed to the slice obtained by
interpolating using the coordinates of the desired slice, in which you
obtain a trilinear interpolate of the intensities of the voxels bounding
the coordinate, rather than an average of all the voxels bounded by the
slice voxel.

I was curious if anyone has tried this, or if i'm even interpreting the
operation of VOXEL_PROJ correctly. Thanks in advance for any advice you
may have,







Ted
graves@reyes.stanford.edu
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