Hi

Both will be ok. I'd suggest using the same transform that is used in the longitudinal stream. It is more accurate than creating a new one with the orig images (as the long stream uses the norm.mgz) also you'll have everything in the same space as the base. The transforms ca be found in the based/mri/transforms dir and are called tpid_to_baseid

Cheers, Martin

On Sep 6, 2010, at 10:11, j janssen joost.janssen76@gmail.com wrote:

Hi,

• using version 4.5

in the v4.5 standard longitudinal processing stream with 2 images mri_robust_register creates halfway space transformations using the 2 time point's norm.mgz files.

i would like to apply the halfway transformations (mri_convert -at) to the 2 time point's _original_ (001.mgz) images. can i do this and if so, how?

or should i create new halfway transformations with something like: mri_robust_register --mov timepoint1_001.mgz --dst timepoint2_001.mgz --lta v1to2.lta --halfmov h1.mgz --halfdst h2.mgz --halfmovlta h1.lta --halfdstlta h2.lta --iscale

thanks, -joost _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer