Couple of connectometry questions

[Crest-E MGH]

Hi Frank,

I am trying to run a connectometry analysis and have a question and a small bug I want to let you know about. First: if I am looking at group differences (i.e. dementia patients vs controls), is it recommended to create separate databases for each group or combine all subjects in a single database? I know that you can export tract statistics for each subject after so it seems easiest to separate the groups in the analysis rather than in the database creation, but I just want to check if this is correct.

Second: I was using the April 16 2021 build and was unable to "enable autotrack" after loading a connectometry database. The error I received was "no tractography atlas associated with the current template". Autotrack seems to work fine in the Feb 24 2020 build. Is there a way to associate the atlas and template in the April build, or should I revert to a different build to run the autotrack steps? Is there a major difference between the builds that would cause problems if I reverted?

Thanks in advance for your help!

Lydia

[Frank Yeh]

I am trying to run a connectometry analysis and have a question and a small bug I want to let you know about. First: if I am looking at group differences (i.e. dementia patients vs controls), is it recommended to create separate databases for each group or combine all subjects in a single database? I know that you can export tract statistics for each subject after so it seems easiest to separate the groups in the analysis rather than in the database creation, but I just want to check if this is correct.

I would suggest combining all of them. The connectometry analysis allows for selecting cohort based on demographics.

 

Second: I was using the April 16 2021 build and was unable to "enable autotrack" after loading a connectometry database. The error I received was "no tractography atlas associated with the current template". Autotrack seems to work fine in the Feb 24 2020 build. Is there a way to associate the atlas and template in the April build, or should I revert to a different build to run the autotrack steps? Is there a major difference between the builds that would cause problems if I reverted?

You may update DSI Studio to the most recent version and see if the problem still exists.

If yes, I will fix it asap.

Thanks a lot for letting me know about the bug.

Best regards,

Frank

 

Thanks in advance for your help!

Lydia

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[Crest-E MGH]

Hi Frank,

Thanks for your response, I went ahead and included all subjects in a single database.

We tried updating DSI Studio and are currently getting the following error upon program start: "Cannot find FA template in the template folder. Please download dsi_studio_other_files.zip from DSI Studio website and place them with the DSI Studio executives."  It looks like this may be due to a deleted or broken link (https://www.dropbox.com/s/rq5khgmoyiye0op/dsi_studio_other_files.zip?dl=0). Where can we download the "dsi_studio_other_files"? In addition, if I click OK on the error I get the main DSI Studio screen, but when I try to load a fib file the program crashes. It does seem to be fine when loading an src. Please let me know if you have any suggestions.

Thank you!

Lydia

[Frank Yeh]

Hi Lydia,

    The other files can be downloaded from any of the zip files at https://github.com/frankyeh/DSI-Studio/releases/tag/2021_08

Best,

Frank

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[Crest-E MGH]

Hi Frank,

Thank you for providing that info. We got the files and everything seems to be working well. FYI, the "enable autotrack" option is working in this newest version.

Thanks so much for your help!

Lydia