z-score mapped to DW space

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1

Hello all,

I have fmri data that I have processed to extract the z-score (or z-threshold) from the independent components. However, now I would like to map these components to DW-native space using an affine transformation via the subjects T1 anatomical image. But I was wondering how I can do that?

Thanks in advance for your help :slight_smile:

2

Hi, Sondos-

I have fmri data that I have processed to extract the z-score (or z-threshold) from the independent components. However, now I would like to map these components to DW-native space using an affine transformation via the subjects T1 anatomical image. But I was wondering how I can do that?

3dAllineate is the basic function for aligning volumes affinely; you can make a map from T1w to the b=0 volume of the DWI, for example; for any alignment involving volumes of differing contrasts, using the “lpc” cost function is the way to go. You can save the matrix transform and apply it to the Z-score data.

Actually, what space is your Z-score data in? Is it in your subject’s T1w space? Or it is in a template, or in EPI space?

–pt

3

Okay, thanks! I will try that :slight_smile:

I mapped it onto my functional space I believe.