FYI: Those templates are actually the same, at least on recent versions of FSL.

For FSL 5.0.4, the brain extracted files of 

avg152T1_brain.nii.gz 

and

MNI152_T1_2mm_brain.nii.gz

are exactly identical (checked via 'diff' command).

and the non-brain extracted variants of

avg152T1.nii.gz 

and

MNI152_T1_2mm.nii.gz

only differ in their values along the z=0 plane (avg152T1 contains 0's along the z=0 plane, while MNI152_T1_2mm contains non-zero values along the z=0 plane).

cheers,

-MH

-- 

Michael Harms, Ph.D.

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Conte Center for the Neuroscience of Mental Disorders

Washington University School of Medicine

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St. Louis, MO  63110 Email: [log in to unmask]

From: Stephen Smith <[log in to unmask]>
Reply-To: FSL - FMRIB's Software Library <[log in to unmask]>
Date: Wednesday, January 29, 2014 12:46 AM
To: FSL - FMRIB's Software Library <[log in to unmask]>
Subject: Re: [FSL] Difference between standard space templates

Hi   - avg152T1_brain.nii.gz  is an older template based on less-good individual subject alignments pre-averaging.

Cheers.

On 29 Jan 2014, at 00:48, Ian Galea <[log in to unmask]> wrote:

Dear FSL team,

In FSLView, what is the difference between avg152T1_brain.nii.gz and MNI152_T1_2mm_brain.nii.gz? I note they are of the same size.

Yours sincerely

Ian Galea
Clinical Neurosciences
Southampton, UK

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Associate Director,  Oxford University FMRIB Centre

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