Hi Douglas,

Does LIA means the stored intensity changes first from left to right, followed by changing from inferior to superior, and the slowest changing is from posterior to anterior?

Best Regards, Yi

-----Original Message----- From: freesurfer-bounces@nmr.mgh.harvard.edu [mailto:freesurfer-bounces@nmr.mgh.harvard.edu] On Behalf Of Douglas N Greve Sent: Tuesday, November 28, 2017 4:54 PM To: freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] the ordering in ascii txt file

Run mri_info and see the Orientation  string. Eg, LIA

On 11/28/2017 11:47 AM, Yi Li wrote:

Dear Freesurfer experts,

I used the following mri_convert command to extract the skull stripped image and save it to a txt file. The file contains only one column, and has 256*256*256=16,777,216 rows. Does anybody know the ordering in which 256*256*256 array is transformed to the vector (eg, which of R-L, A-P, S-I changes fastest and slowest). Thanks!

mri_convert $datadir/$subj/mri/brainmask.mgz $target/$subj.txt --ascii

Best Regards,

Yi Li (PhD)

Senior Computational Scientist

Computational Sciences

The Jackson Laboratory

Farmington, CT 06032

Tel: 860-837-2156

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