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Hi - they pass different weighting options for the TFCE "cluster enhancement" - this is described in the NeuroImage paper on TFCE.

I've not looked into applying TFCE to the "flow" edge images from SIENAr - but I would think that maybe --T2 is the best thing to choose as the data at that stage is fundamentally 2D.

Cheers.



On 8 Dec 2012, at 13:15, Joyce Yu Guo wrote:

Dear Stephen,

Thank you very much for your reply. I read FSL practicals and randomise manual of --T2 and -T option, but I still do not get the difference between these two options in my case. Since I used flow_A_B imaging from SIENA, there would be only data on the brain edge. According to FSL SIENAr practicals --T2 is to use TFCE on the masked surface data and -T is a general option to use TFCE, two options should be the same in my case, right or not? Is there any reference literature available to read?

Sorry for asking basic question for so many times.

Joyce



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Stephen M. Smith, Professor of Biomedical Engineering
Associate Director,  Oxford University FMRIB Centre

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