Processing infant data with qsiprep

Hi all,

I want to try processing infant data with QSIPrep. I know there is an –infant param I can specify and that the participants.tsv should include the age. However, this subject is only a four days old. The QSIPrep docs say that participant ages should be in months:

QSIPrep will attempt to automatically extract participant ages (in months) from the BIDS layout. Specifically, these two files will be checked:

Sessions file: //_sessions.tsv

Participants file: /participants.tsv

Either file should include age (or if you wish to be more explicit: age_months) columns, and it is recommended to have an accompanying JSON file to further describe these fields, and explicitly state the values are in months.

In my participants.tsv file, the ‘age’ column of the subject says 4D (for four days). Is it still possible to process this subject? Since the subject is 4 days old could I just change it to be 0.13 months?

Hi @scchung,

Yes, please change your age to months. You can see here (tpl-MNIInfant/template_description.json at master · templateflow/tpl-MNIInfant · GitHub) that the age units for MNI-Infant template is in months. Accidentally inputting 4 months (instead of 0.13) will result in the wrong age-specific cohort template being used.

Best,
Steven

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