Can you give some details on the DTI
sequence you are using for this study? Generally, monkey EPI DTI scans will
require some distortion correction before they can be accurately registered to
a T1 image.
Peace,
Matt.
From:
Sent: Wednesday, March 05, 2008
6:07 PM
To: [log in to unmask]
Subject: Re: [FSL] Registering
Monkey
I actually haven't tried
registering T1-weighted scans and DTI scans as of yet; just T2-weighted and
T1-weighted scans.
(1) Have you tried using both the FA and I0 images to do the registration, I'm
wondering if changing the DTI image would improve the results.
(2) What are your voxel resolutions of the DTI and T1-weighted images?
(3) Do you have a T2-weighted image?
(4) Are you using a 6-parameter affine transformation?
(5) Can you attach a image of the poor registration?
On Wed, Mar 5, 2008 at 4:01 PM, Roman Loonis <[log in to unmask]> wrote:
It does not seem to be cutting brain tissue from outside the brain. I
am trying to register a monkey anatomical scan to a monkey diffusion scan.
Roman
On Wed, Mar 5, 2008 at 1:34 PM, MCLAREN, Donald <[log in to unmask]>
wrote:
(1) Check the BET output to make sure that it is not cutting off any
brain tissue or including anything outside of the brain.
(2) What are you trying to register?
On Wed, Mar 5, 2008 at 12:29 PM, Roman Loonis <[log in to unmask]>
wrote:
I am trying to do tractography on monkey brains using FSL studio. I
obtained my images in minc, did some preprocessing, and registered them in
minc. I checked visually to make sure the the structural was well
registered with the diffusion images in a minc based software. I
subsequently converted the files into proper nifti files. Following this
converison, my files were no longer registered properly... I am not too
sure what kind of fix there is available for this error.
Moreover, I tried registering the images using FSL's Bet extraction and
then the "registeration" program. The files after the registration
were
not well registered. What should I do?
--
Best Regards, Donald McLaren
=====================
D.G. McLaren
University of
Neuroscience Training Program
Tel: (773) 406 2464
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--
Best Regards, Donald McLaren
=====================
D.G. McLaren
University of
Neuroscience Training Program
Tel: (773) 406 2464
=====================
This e-mail contains CONFIDENTIAL INFORMATION which may contain PROTECTED
HEALTHCARE INFORMATION and may also be LEGALLY PRIVILEGED and which is intended
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