Re: [Freesurfer] .lta vs .dat questions

Hi Corinna, the two files should give the same vol2vol output. Can you send your command lines and pics of how they are different? The fscale was only used by the old tkregister program to control the brightness. doug

On 10/18/2023 1:44 PM, Corinna Bauer wrote:

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Also - what does the "fscale" in the .lta file refer to?

On Wed, Oct 18, 2023 at 1:40 PM Corinna Bauer corinnab83@gmail.com wrote:

Thanks, Yujing.

Do you know why the output of mri_vol2vol would be different if
using the .lta vs the .dat file? And, if the .dat file was
verified/modified using tkregister2, would the .lta file also be
updated accordingly?

Thanks

Corinna

On Wed, Oct 18, 2023 at 1:35 PM Huang, Yujing
<YHUANG43@mgh.harvard.edu> wrote:

    Hi Corinna,

    Here is an explanation of register.dat  - *MailScanner has
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    claiming to be*
    https://surfer.nmr.mgh.harvard.edu/fswiki/RegisterDat
    <https://secure-web.cisco.com/1LS1n_2IFmJqHufz_79O5K0eXjVtJxKQ0M6GnUF8GTuXJ1hdSOEcVCFw0R8yMW2Y1jgy8peX9T-wJQ3wK2BorIgXBj9SQO6MxLK3ix-2yrwMlihqiQOzEoHAmviNae3952L8fdk7MYa6sQQJKXTTdLP5wQ2vNtf_j38OOauga-zD9SdvPRc2oY1BY-xN_y-gHOCSBSwUQmdxnYQGGahqm2UQFD6jKJeqtTLBhV4hdDPkXGCMbiTYTXGizMklYCF2jyPoMKM3Oau76fV69ViR3BQnT22lkaONK3HyGMCcUckfJwCPvSDEpNjFD7zKGD0plVt7AGXzc5-xFqFm41YHwLQ/https%3A%2F%2Fsurfer.nmr.mgh.harvard.edu%2Ffswiki%2FRegisterDat>

    You can use lta_convert to convert it to .lta  - *MailScanner
    has detected a possible fraud attempt from
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    https://ftp.nmr.mgh.harvard.edu/pub/docs/html/lta_convert.help.xml.html
    <https://secure-web.cisco.com/12rpvh0XjUz2-jniVSUqU1AOUWpta2BodBDpKZEVJD4ENU0az5aprsFnxJ2Xq3EJljG4yku3hu6wouX8puqdN29uVnd8sNGzs8JxTjdzwsAq-aGkus8O94Lmmfrl3wWoRMxa1UxYl_yrFCHU0gR19TT_Ac-nLLZ_kkUc2hLFa6iqSxnlzi8vtoYLeR-xVZLD8fMWApj0lVt4OZ1RdySoyrigPKQczeFeFuIF1nfFHguD9X8OdW6ro7vbHilJaObjOditWRg59h3YWZPpJ_w_ptoQ4m4xYr0WC24_na0NDpMOrqhlxmOWIhYJU4fcoFONzP6wkK1g5-E6ct-kmF89Yaw/https%3A%2F%2Fftp.nmr.mgh.harvard.edu%2Fpub%2Fdocs%2Fhtml%2Flta_convert.help.xml.html>

    Best,

    Yujing

    *From:* freesurfer-bounces@nmr.mgh.harvard.edu
    <freesurfer-bounces@nmr.mgh.harvard.edu> *On Behalf Of
    *Corinna Bauer
    *Sent:* Wednesday, October 18, 2023 1:07 PM
    *To:* Mailing Freesurfer List <freesurfer@nmr.mgh.harvard.edu>
    *Subject:* [Freesurfer] .lta vs .dat questions

    *        External Email - Use Caution *

    Hi all,

    Can someone please explain the difference between .lta and
    .dat and why the registration looks different using the two
    file types?

    If bbregister outputs were already checked and edited (if
    needed) using the .dat file, is there a way to convert it to .lta?

    Thanks

    Corinna

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