> 1. Am I doing something wrong? If so, what could it be?
I'm not sure what is happening here, but I would suggest you look at the
imported images, and template images (generated by DARTEL) for clues.
> 2. Which files do I need to be selecting for the normalisation process?
For the estimation of the warps, you would select the rc1 images and the rc2
images (the "imported" images) as a seperate channels. For writing the
spatially normalised images, you would select the flow fields and the images
that you want to spatially normalise.
> 3. I read that for the normalisation to work it needs isotropic voxels.
> Is this true? If so, our voxel size is -1.72 x 1.72 x 3. Can we apply
> Dartel normalisation to this or do we have to re-size them to isotropic
> size?
The "imported" images are generated with isotropic voxel sizes.
Best regards,
-John
On Friday 01 May 2009 17:07, Devdutta W wrote:
> Hi,
> I have been trying to normalise the warped images to MNI space using
> Dartel. I am following the steps from "Using Dartel". I use the
> Normalise: estimate module then the Deformations module. When I view the
> normalised image, it is just gray field with evidence of some underlying
> structure. I am tempted to say it might just a flow-field or something
> similar it is displaying.
>
> Here are my questions:
>
> 1. Am I doing something wrong? If so, what could it be?
> 2. Which files do I need to be selecting for the normalisation process?
> 3. I read that for the normalisation to work it needs isotropic voxels.
> Is this true? If so, our voxel size is -1.72 x 1.72 x 3. Can we apply
> Dartel normalisation to this or do we have to re-size them to isotropic
> size?
>
> Any help in this matter will be greatly appreciated.
>
> Thank you,
> Devdutta
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