https://github.com/aces/mni-models_colin27-lin

https://github.com/aces/mni-models_colin27-lin

Last synced: 3 months ago
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• Host: GitHub
• URL: https://github.com/aces/mni-models_colin27-lin
• Owner: aces
• License: other
• Created: 2019-05-08T15:42:28.000Z (about 7 years ago)
• Default Branch: master
• Last Pushed: 2019-05-10T00:06:45.000Z (about 7 years ago)
• Last Synced: 2026-01-29T19:13:17.184Z (5 months ago)
• Language: M4
• Size: 193 KB
• Stars: 0
• Watchers: 5
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README
  • Changelog: ChangeLog
  • License: COPYING
  • Authors: AUTHORS

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README

          
		       Colin 27 Average Brain

		    Stereotaxic Registration Model

This is a stereotaxic average of 27 T1-weighted MRI scans of the same

individual.  This average dataset was created in a two step process.

First, each of the 27 T1-weighted scans were registered to stereotaxic

space using the mritotal procedure and resampled onto a 1mm grid in

stereotaxicc space.  All 27 scans were averaged together to create an

initial average.  This average volume was used as a target for the

second phase of registration where each original T1-weighted MRI was

re-registered in stereotaxic space.  This procedure has the advantage

of removing the small variance in intra-subject mapping in stereotaxic

space associated with the use of a multi-subject average.  This

procedure has been described in detail in:

   Holmes CJ, Hoge R, Collins L, Woods R, Toga AW, Evans AC.

   "Enhancement of MR images using registration for signal averaging."

   J Comput Assist Tomogr. 1998 Mar-Apr;22(2):324-33.

The volumes here are specially adapted for use with the MNI Linear

Registration Package (mni_autoreg).  Included in this package are the

following files:

     colin27_t1_tal_lin.mnc:

	a version of the average of 27 scans described above. This

        volume covers the whole brain (unlike the original Talairach

        atlas), and is sampled with 1mm cubic voxels

     colin27_t1_tal_lin_mask.mnc, colin27_t1_tal_lin_mask.obj:

	a mask of the intra-cranial cavity of colin27.mnc, created

        using mincbet-1.3.6 (derived from FSL Bet)

     colin27_t1_tal_lin_headmask.mnc:

	a rough mask of the whole head, required for nonlinear mode

     colin27_t1_tal_lin_vent.mnc, colin27_t1_tal_lin_vent.obj:

        a mask of the ventricles

     colin_t1_tal_lin_ntags_1000_bg.tag:

        tag points for the background for colin27_t1_tal_lin.mnc

     colin_t1_tal_lin_ntags_1000_nobg.tag:

        tag points for the CSF, GM, and WM for colin27_t1_tal_lin.mnc

     Cerebellum_Ventricles_SubCortical_Mask-colin.mnc:

        a template for the cerebellum, brain-stem, ventricles and sub-cortical

        gray to be used in the CIVET pipeline

     colin_to_icbm152_2009a.xfm, colin_to_icbm152_2009a_grid_0.mnc:

        a non-linear transform to map the Colin model to the MNI-ICBM152-2009a

        model.