Dear Cécile,
On Tue, 7 Sep 2021 09:40:25 +0000, Cécile Armella Héléna Mueller <[log in to unmask]> wrote:
>Dear experts,
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>1) I used the "segment longitudinal data" (VBM) on CAT12 in which I processed the Volume ROIs with neuromorphometrics atlas. Now that the preprocessing is done, is there a possibility to extract the data with an other atlas such as the AAL3 atlas?
Unfortunately, not. You have to select the atlas before processing the data. However, the neuromorphometrics atlas is a good choice and I don't recommend the AAL3 atlas in general. Just compare the delineations between both atlases to see why.
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>NB : when I runned the segmentation, there was not the proposition "own atlas maps" available.
Then, try to update. This is available in newer versions.
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>2) I runned a flexible factorial design with group (2) x timepoint (2) with images resulting from the preprocessing; and sample t-test with images from the difference of volume between t1-t0 using Imcalc. The "Roi analysis" function of CAT12 doesn't work with my SPM.mat from the sample t-test. Is it due to the "difference images" from Imcalc?
For ROI analysis the original data are searched and if these are difference images, the ROI approach will not work.
Best,
Christian
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>Best,
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>C�cile
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