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FSL  June 2010

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Subject:

RD and AD maps / Cluster option

From:

SUBSCRIBE FSL Patricia Pires <[log in to unmask]>

Reply-To:

FSL - FMRIB's Software Library <[log in to unmask]>

Date:

Mon, 14 Jun 2010 11:43:41 +0100

Content-Type:

text/plain

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text/plain (21 lines)

Dear fslexperts,

I have several questions, I hope you can help me:

1) I have read literature about the RadialDiffusion and AxialDiffusion maps however when I run dtifit i can't  get this maps ;my outputs are: FA, MD, L1/2/3, V1/2/3, MO, S0 but nothing about RD or AD. Can you please tell me how to get these images?

2) Another question is about randomise outputs. I can watch the results of my tfce_corrp_tstat analysis when i select Min: 0.95 and Max: 1 in fslview but i would like get a value information of these areas. I have heard about cluster option but i am a bit confused. I tried to do this:

[neuro@wl-neuro03 stats]$ cluster --in=resultados_TBSS_tfce_corrp_tstat1.nii.gz --thresh=.95
Cluster Index   Voxels  Z-MAX   Z-MAX X (vox)   Z-MAX Y (vox)   Z-MAX Z (vox)   Z-COG X (vox)   Z-COG Y (vox)   Z-COG Z (vox)
4       33155   0.995   97      156     71      85.7    108     91.6
3       3150    0.96    99      103     83      86.9    107     75.1
2       33      0.951   123     156     65      123     157     65.9
1       3       0.95    35      90      66      35.3    89.7    65.3

But i'm not sure about what this information means. Is the maximal voxel in a cluster? There is any way to get all the significative voxels and its localization?

Thanks in advance,

Patricia.

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