Bruce Cameron (cameron.bruce++at++mayo.edu)
Tue, 12 Nov 1996 07:04:00 -0600
It should not be a difficult task to extract the vertebrae
from CT data using Analyze. You should be able to segment
the bone with a simple thresholding operation. Once you
have the bone, individual vertebrae could be segmented
in a number of ways such as
1) using image edit to segment the vertebrae
into an object map
2) using the object map tools in volume render
If thresholding won't do the initial segmentation, and the CT and MRI
are registered, you could use multi-spectral analysis or conditional
erodes/dialates in morphology to do the segmentation.
Developing polygonal models from volumetric data generally does result
in large files, so you either have to find algorithms that are optimized
for medical data or run your models through some form of polygon
reduction
algorithm.
--
--Bruce
-----------------------------------------------------
Bruce M. Cameron bmc++at++mayo.edu
Mayo Foundation office: (507) 284-3288
200 1st St SW fax: (507) 284-1428
Rochester, MN 55905 ARS WD9CKW
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