Copyright 2010 Illinois Institute of Technology, All Rights Reserved The purpose of this READ_ME file is to provide a detailed description of the files' contents. When using the IIT2 template please cite: Zhang S, Peng H, Dawe RJ, Arfanakis K. Enhanced ICBM diffusion tensor template of the human brain. Neuroimage 2011;54:974Ð984. UNZIP INSTRUCTIONS ------------------ - The files IIT2mean.zip and IIT2median.zip contain files of the IIT2mean and IIT2median DTI templates, respectively. - Typical unzipping software can be used to unzip the files. CONTENT DESCRIPTION ------------------- ---- 1 The file IIT2mean.zip contains the following files corresponding to the IIT2mean DTI template: - IIT2mean_FA.nii: FA maps produced from the mean tensors of the IIT2mean template. (NIfTI file format) - IIT2mean_tr.nii: Trace maps produced from the mean tensors of the IIT2mean template. (NIfTI file format) (Units: mm^2/sec) - IIT2mean_colormap.tif: FA-weighted color maps produced from the mean tensors of the IIT2mean template. - IIT2mean_(xx,yx,yy,zx,zy,zz).nii: The xx, yx, yy, zx, zy, zz elements of the mean tensors of the IIT2mean template. (NIfTI file format) (Units: mm^2/sec) - IIT2mean_L(1,2,3).nii: 1st, 2nd, and 3rd eigenvalues of the mean tensors of the IIT2mean template. (NIfTI file format) (Units: mm^2/sec) - IIT2mean_dw.nii: Normalized average mean DW images over all subjects. (NIfTI file format) - IIT2mean_b0.nii: Normalized average b=0sec/mm^2 images over all subjects. (NIfTI file format) - IIT2mean_fastd.nii: Standard deviation of FA of the IIT2mean template. (Produced based on 100 mean tensor templates generated with a bootstrap approach) (NIfTI file format) - IIT2mean_trstd.nii: Standard deviation of trace of the IIT2mean template. (Produced based on 100 mean tensor templates generated with a bootstrap approach) (NIfTI file format) (Units: mm^2/sec) - IIT2mean_cou.nii: Cone of uncertainty of the IIT2mean template. (Produced based on 100 mean tensor templates generated with a bootstrap approach) (NIfTI file format) (Units: degrees) - IIT2mean_tvdt_scl.nii: Total variance of the diffusion tensor for the IIT2mean template. (Produced based on 100 mean tensor templates generated with a bootstrap approach) (NIfTI file format) (Units: 10^(-8)*(mm^2/sec)^2) The dimensions of all NIfTI files above are 182*218*182, with isotropic 1 mm x 1 mm x 1 mm resolution. All NIfTI files above contain float numbers, and the header size is 352 bytes. - IIT2mean_V(1,2,3).nii: 1st, 2nd, and 3rd eigenvectors of the mean tensors of the IIT2mean template. (NIfTI file format) The dimensions of these three files are 182*218*182*3, with isotropic 1 mm x 1 mm x 1 mm resolution. All 3 eigenvector files contain float numbers, and the header size is 352 bytes. ---- 2 The file IIT2median.zip contains the following files corresponding to the IIT2median template: - IIT2median_FA.nii: FA maps produced from the median tensors of the IIT2median template. (NIfTI file format) - IIT2median_tr.nii: Trace maps produced from the median tensors of the IIT2median template. (NIfTI file format) (Units: mm^2/sec) - IIT2median_colormap.tif: FA-weighted color maps produced from the median tensors of the IIT2median template. - IIT2median_(xx,yx,yy,zx,zy,zz).nii: The xx, yx, yy, zx, zy, zz elements of the median tensors of the IIT2median template. (NIfTI file format) (Units: mm^2/sec) - IIT2median_L(1,2,3).nii: 1st, 2nd, and 3rd eigenvalues of the median tensors of the IIT2median template. (NIfTI file format) (Units: mm^2/sec) - IIT2median_fastd.nii: Standard deviation of FA of the IIT2median template. (Produced based on 100 median tensor templates generated with a bootstrap approach) (NIfTI file format) - IIT2median_trstd.nii: Standard deviation of trace of the IIT2median template. (Produced based on 100 median tensor templates generated with a bootstrap approach) (NIfTI file format) (Units: mm^2/sec) - IIT2median_cou.nii: Cone of uncertainty of the IIT2median template. (Produced based on 100 median tensor templates generated with a bootstrap approach) (NIfTI file format) (Units: degrees) - IIT2median_tvdt_scl.nii: Total variance of the diffusion tensor for the IIT2median template. (Produced based on 100 median tensor templates generated with a bootstrap approach) (NIfTI file format) (Units: 10^(-8)*(mm^2/sec)^2) The dimensions of all NIfTI files above are 182*218*182, with isotropic 1 mm x 1 mm x 1 mm resolution. All NIfTI files above contain float numbers, and the header size is 352 bytes. - IIT2median_V(1,2,3).nii: 1st, 2nd, and 3rd eigenvectors of the median tensors of the IIT2median template. (NIfTI file format) The dimensions of these three files are 182*218*182*3, with isotropic 1 mm x 1 mm x 1 mm resolution. All 3 eigenvector files contain float numbers, and the header size is 352 bytes.