[Mristudio-users] ICBM-81 complement for FMi and FMa?

[Cyrus Eierud]

Dear MRI Studio,

Thanks for your great class in July!
Working with a meta analysis of WM regions I decided to use the ICBM-81 as the gold standard, which all other articles has to match even if coordinates are used. However, ICBM-81 does not include the important forceps minor (FMi) nor forceps major (FMa) regions. I found that in FSL there are JHU-ICBM-tracts-maxprob-thr0-1mm.nii, JHU-ICBM-tracts-maxprob-thr25-1mm.nii and JHU-ICBM-tracts-maxprob-thr50-1mm.nii that do include both FMi and FMa, but with different thresholds. I thought I could create my own map by merging one of the other 3 maps with the ICBM-81, but I would like FMi and FMa to have a comparable threshold to the original threshold of ICBM-81. In my study I need the parcellated spatial ROI distributions to have the same threshold (including for FMi and FMa). Can you recommend which FMi/FMa map I should use to merge with the ICBM-81 to get a complete white matter parcellation map? In addition, I don't necessarily need to merge the additional map to the ICBM-81. It is also okay if you tell me which map, which includes FMi and FMa, that has the most comparable threshold as the ICBM-81 map.

Best Regards,
Cyrus Eierud
Graduate student in the LaConte Lab
Baylor College of Medicine, TX and
Virginia Tech Carilion Research Institute




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