BIDS naming for the PSIR sequence

Hi,

What would be the appropriate BIDS naming for the phase-sensitive inversion recovery (PSIR) sequence?

Thanks,
Julien

I’m fairly sure PSIR isn’t supported at the moment, but the quantitative MRI extension proposal is in a good position to add it.

BEP001 adds a suffix for inversion recovery for T1 mapping (_IRT1). Although it hasn’t been merged yet, BEP001 is fairly stable, so applying some of the rules introduced there should be alright. Assuming PSIR is the same as IRT1, but with additional phase reconstruction, then you could use the following structure for the files (adapted from an IRT1 example in the BEP):

sub-01_inv-1_part-mag_IRT1.nii.gz
sub-01_inv-1_part-mag_IRT1.json
sub-01_inv-1_part-phase_IRT1.nii.gz
sub-01_inv-1_part-phase_IRT1.json
sub-01_inv-2_part-mag_IRT1.nii.gz
sub-01_inv-2_part-mag_IRT1.json
sub-01_inv-2_part-phase_IRT1.nii.gz
sub-01_inv-2_part-phase_IRT1.json
sub-01_inv-3_part-mag_IRT1.nii.gz
sub-01_inv-3_part-mag_IRT1.json
sub-01_inv-3_part-phase_IRT1.nii.gz
sub-01_inv-3_part-phase_IRT1.json

If PSIR is different from IRT1, though, you may need to propose a new suffix. It might be worth commenting on the PR to request that suffix.

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