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Re: Registering CT and MRI volumes

karthik balasubramaniam (clunis_immensus@MailAndNews.com) writes:

> I remember spotting a thread on registering medical volume data,
> a while back. Unfortunately, I haven't been able to retrieve it at deja.com,
> which I've been using so far(only shows me recent postings).
> Anyways, I need to register CT and MRI volumes, and was hoping someone could
> point me to IDL(or even C/C++) code that does volume registration.
> I do have some literature on the topic, but thought it worthwhile sounding 
> out
> people before reinventing the wheel.
> Any links, references, code would be immensely appreciated.

I have in front of me a pre-print of an article entitled
"Volumetric image registration by template matching", written
by Ardi Goshtasby's group at Wright State University. I saw
this algorithm in action several weeks ago, and I must say
I was extremely impressed with the speed and accuracy they
have obtained.

The basic idea is to use a handful of templates from
"high information content" areas of the volumes to
do the matching, rather than matching the entire
volumes. In this case, "high information content" means
edges, etc. The algorithm can automatically select
these templates and perform the matching. I saw it
work well when the regions were just slightly mismatched
and when they were significantly mismatched. I was

I understand the IDL algorithm will be made available for
research purposes. You can write to Ardi Goshtasby at
agoshtas@cs.wright.edu for additional information. Please
give him my compliments.


David Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438 E-Mail: davidf@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155