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Hello,
           You can use the separate binary segmentations ( output with the -g option ) along with fslmaths to create a mask from different subsets of tissues. Alternately you can use fslmaths with the thresholding options to extract tissue masks from the tissue-type coded image, and combine with fslmaths.

Hope this helps,
Matthew
Hello Mark,
Thanks for your response. I want to combine masks from different tissues that have been collected from the FAST tool. This is we are naming as segmented head image. I want this image in ANALYZE format. I can convert that with mriconvert software. But can you give me an idea how to combine the outputs from FAST of different tissues.

Thanks
Hasan

On 11/12/2015 03:09 AM, Mark Jenkinson wrote:
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Sorry, I don't understand the question and what you mean by a "segmented head model".
One output from FAST is a nifti image with each voxel coded by tissue type (i.e. contains a 1, 2 or 3 relating to CSF, GM, WM).  Is this what you want?

All the best,
Mark


From: FSL - FMRIB's Software Library <[log in to unmask]> on behalf of Shahebul Hasan <[log in to unmask]>
Reply-To: FSL - FMRIB's Software Library <[log in to unmask]>
Date: Wednesday, 11 November 2015 18:29
To: "[log in to unmask]" <[log in to unmask]>
Subject: [FSL] Obtaining Segmented head model

Hello FSL experts,
I am looking for obtaining a segmented head model after getting the WM, GM and CBF from the T1-weighted MR image using FAST. Can you please give me any idea which tool of FSL can I use to obtain the segmented head model.

Thanks,
Hasan