ICBM T2 Atlas


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ICBM T2 Atlas

Overview

The ICBM T2 50 atlas is an average of the T2-weighted MRIs of 50 normal young adult brains (equal gender distribution). The space the atlas is based on is the ICBM 452 deterministic atlas and not on any single subject. It represents the mean volume constructed from the average position, orientation, scale, and shear from all 50 individual subjects. The atlas, therefore, is both an average of T2 intensities as well as spatial positioning.

Methods

The following paragraphs describe the methods that were used on the different version(s) of the ICBM T2 Atlas.
 
Affine AIR 12 Atlas
The atlas was created using AIR5.0 and exists in two formats (Analyze/IMG/HDR & MINC). The atlas is based on linear transforms of the subjects into the atlas space using a 12-parameter affine transformation (the air12 atlas). This atlas uses chirp-z interpolation for reslicing the voxel intensities.
 
Additional information about this atlas is available at the following resources:
http://dx.doi.org/10.1006/nimg.1995.1012
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1088516/
http://www.ncbi.nlm.nih.gov/pubmed/11522763
http://www.ncbi.nlm.nih.gov/pubmed/17266101