| Re: ROI outlining of 3D volumes (multi-slice 2D) [message #60131] |
Mon, 28 April 2008 14:40 |
Loren Anderson
Messages: 22
Registered: August 2007
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Junior Member |
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Well, it may not be quite what you are looking for, but I have written
a program that does basically what you need. It's located at
http://people.bu.edu/andersld/. It is set up for astronomical cubes
where the third axis is velocity, but should work with any cube. I
can guarantee that it won't be as slick as David's, and will contain
more bugs. You can adjust the contrast/brightness and save/restore
regions though.
I am in the middle of updating the program and will have a new version
out in a month or so, which should be much improved.
-Loren
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| Re: ROI outlining of 3D volumes (multi-slice 2D) [message #60132 is a reply to message #60131] |
Mon, 28 April 2008 12:02  |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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stefan writes:
> I need to create a tool that allows fast outlining of multi-slice MRI
> data. XROI is rather nice but only allows 2D arrays. Rather than re-
> inventing the wheel, I'd like to ask whether someone has done
> something similar before and is willing to share. Ideally, I'd like a
> tool to
> allow the definition of (multiple) ROIs,
> saving and retrieving them,
> as well as windowing (contrast/brightness adjustment) of the
> underlying image,
> all while paging through multiple slices of the image stack.
I'm not sure about "sharing", but if you were talking
about "buying" I have something that could be whipped into
shape for you pretty easily.
This little application takes an MRI image stack and
allows the user to quickly outline a region of interest
on the image. An active contour then "snugs up" the contour
around the region of interest. The user (or technician
in this case) can then "edit" the fit, as required.
When all is ready, the contour is then applied to the next
image, active contouring is applied, etc. The data inside the
ROI is set aside for further statistical processing, etc.
It was designed to be used by a lab technician in a clinical
setup and seemed to work about as well as expected.
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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