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What is the meaning of each image filename?

You are here: Home1 / Forums2 / Support forum ARCHIVED – Please use Slack Channel instead3 / What is the meaning of each image filename?4
Viewing 5 posts - 1 through 5 (of 5 total)
  • Author
    Posts
  • 06/12/2018 at 4:57 AM #4887
    fleeting
    Participant

    Hi everyone,

    I used lead-dbs to do coregistration, normalization and brainshift correction. It has generated lots of files, but I don’t know what the gl- means, like glanat.nii, glpostop_ct.nii, and tp- like tp_rpostop_ct.nii, tp_glpostop_ct.nii and so on.

    I didn’t find out them in the manual, is there anyone who knows meanings of them?

    Thanks,
    Hao

    06/12/2018 at 6:52 AM #4888
    ningfei
    Keymaster

    Hi Hao,

    As you may already know from the images, ‘gl’ files are normalized image, ‘tp’ means ‘tone mapped’ image and ‘rpostop_ct.nii’ is coregistered image.

    Best,
    Ningfei

    06/12/2018 at 8:06 AM #4889
    fleeting
    Participant

    Hi Ningfei,

    Thanks for your reply! I still have a question.

    During process of coreg. and normalization the program generated a image called tp_glpostop_ct.nii, I wonder whether this should be tp_glRpostop_ct.nii? I see the manual says it first coreg. post-operative image to pre-operative image, and then coreg. to MNI space based the transformation parameters found when coreg. pre-operative to template. The tp_glpostop_ct.nii looks like be coregisterd from postop_ct to MNI space directly. Did I think correctly?

    Best,
    Hao

    • This reply was modified 2 years, 10 months ago by fleeting.
    06/12/2018 at 8:36 AM #4892
    ningfei
    Keymaster

    Hi Hao,

    No, ‘glpostop_ct.nii’ is calculated based on ‘rpostop_ct.nii’. It’s a two-step normalization: ‘postop_ct.nii’ -> ‘rpostop_ct.nii’ (aligned with anat_t1.nii) -> ‘glpostop_ct.nii’ (nomalized to MNI space). Since it’s the normalization of ‘postop_ct.nii’ in the end, I think it make sense to use ‘glpostop_ct.nii’. See in your preference file (Lead-dbs menu -> Preferences -> Edit Preferences File). ‘prefs.ctnii_coregistered’ and ‘prefs.gctnii’ are defined there.

    Best,
    Ningfei

    06/14/2018 at 3:47 PM #4908
    fleeting
    Participant

    Thanks! It really helps me a lot!

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