| Re: Registering CT and MRI volumes [message #24063 is a reply to message #24054] |
Sun, 04 March 2001 12:43  |
Randall Frank
Messages: 17
Registered: October 1999
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Junior Member |
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Karthik,
One "standard" algorithm is Roger Wood's AIR:
http://bishopw.loni.ucla.edu/AIR3/index.html
Many of the more popular (particularly functional)
imaging apps use variants of this approach. I have not
seen it coded in .PRO yet (it actually could be done fairly
efficiently), but the technique is very straight-forward
and reasonably robust for small corrections. The functional
imaging group I work with has had good results with it.
I have been thinking about a writing a DLM for it, but I was
waiting until the next release which I hope will allow
real-time use of the algorithm. My application is real-time
fMRI. We use IDL (augmented with a lot of DLMs):
Smyser C, Grabowski RJ, Frank RJ, Haller JW, Blinger L,
"Real-time multiple linear regression for fMRI supported by
time-aware acquisition and processing", Magnetic Resonance
in Medicine, Volume 45, Issue 2, 2001, pp. 289-298.
Not exactly what you were asking for, I hope you find
some of it useful.
BTW: on your KB_ISOSURFACE, might I suggest adding a DLM
to compute an "optimal" complete seed set for a given
dataset? The combination of that and your KB_ISOSURFACE
would yield a complete, high-performance replacement for
the existing IDL DLM. I use a variant of this myself for
N-D isocontouring. A good reference might be:
Bajaj CL, Pascucci V, Schikore DR,"Fast Isocontouring For
Improved Interactivity", 1996 Volume Visualization Symposium,
ISBN 0-89791-741-3, pp.39-46
Apologies for my long-winded response. Those of you who
know me, know I can not help it...
karthik balasubramaniam wrote:
>
> reply-to: clunis_immensus@hotmail.com
>
> 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.
>
> Also, could someone recommend me a web-based newsreader where I could access
> old postings of this newsgroup?
>
> many thanks,
>
> Karthik Balasubramaniam
> CAS Technologies, Chennai
>
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--
rjf.
Randy Frank | ASCI Visualization
Lawrence Livermore National Laboratory | rjfrank@llnl.gov
B451 Room 2039 L-561 | Voice: (925) 423-9399
Livermore, CA 94550 | Fax: (925) 423-8704
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