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Tks GuangyuBest,Danielle Date: Tue, 24 May 2016 11:30:28 -0500 From: [log in to unmask] Subject: Re: [FSL] FA/MD/AD and RD values To: [log in to unmask] Hi Danielle, I think you're doing right. MD value is actually the ADC value, just different names. For RD value, you have to use fslmaths to calculate it from dti_L2 and dti_L3. e.g.: fslmaths dti_L2 -add dti_L3 -div 2 dti_RD.nii.gz -odt float Hope this helps : ) Guangyu On Tue, May 24, 2016 at 11:21 AM, Danielle de Sá Boasquevisque <[log in to unmask]> wrote: Hi all,I am starting FSL analyses and preprocessing.I have stroke patients to extract the mean FA, MD, RD and AD values and I choose a template from Juelich Atlas ( Corticospinal template) to extract those values.I am not sure if what I am doing is right. So, I got this template and I binarize this mask and convert this using a Mattrix ( standardtodiff.xfms)So I am using the fslstats command where I writefslstats dti_FA.nii.gz -k regflirt_stardand2diff_CSTrightmask.nii.gz -M -S ( for the right corticospinal mask) For the MD value, I substitute the dti_FA.nii.gz for the dti_MD.nii.gzFor de AD value, I mean that I have to use the dti_L1For RD value and ADC value I don`t know how to do.I don`t no if I am correct with fslstats or maybe I am wrong with these concepts.Tks for helpDanielle