[Mristudio-users] image coregistration

[Anil Shetty]

 HI Youngbin

I am the newest one to use the program DTI-Studio. I am having lots of problems understanding structure of program steps. Do you have any manual or step by step recipe for doing tractography using Studio. I would greatly appreciate your help.

anil shetty





Anil N. Shetty, Ph.D.
Chief, MR Physics
Diagnostic Radiology
William Beaumont Hospital
Clinical Professor, Diagnostic Radiology, Oakland University 
William Beaumont School of Medicine.
3601 West 13 Mile Road
Royal Oak, MI 48073

Voice:  248-551-1006 
Fax:     248-551-3521 
Page:   248-995-3357
e-mail: ashetty at beaumont.edu


>>> Youngbin Kwak <youngbin at umich.edu> 5/25/2010 2:42 PM >>>
Hello all,

I'm trying to create an ROI for performing tractography. What I'm planning
on is to create an ROI that is defined in a normalized template and then
convert it to native space. In order to do this, I'd first like to
coregister a high-resolution anatomical image to the b0 image, so that
however I create ROI on the anatomy file would parallel the location of DTI
images.

In order to do this, I've loaded the anatomical image and selected
mutual-Info image registration option. I chose b0 image as reference and the
anatomical image as image to be registered and used rigid body
transformation. However there was an error message saying "RegImgFile.tmp
was not found". Can someone help me out resolve this issue?

Another question I have is, when I perform AIR registration for all the dwi
images, there are new files created labled AIR_filename.
Does the program know that it should use the newly created files (i.e.
AIR_filename) to perform tensor calculation and the rest of the step?
Or should I get rid of the original guys from the image tab and only have
the new files available before performing tensor calculation?

thanks a bunch!

Youngbin

-- 
Youngbin Kwak M.S.
Ph.D. candidate, Neuroscience Graduate Program
Cognitive Science & Cognitive Neuroscience Program
University of Michigan