Jointfusion atlas

mindboggle

#1

Hi,

Great work on MindBoggle!
I may have missed this in the accompanying publications, but how is the jointfusion volume atlas derived (e.g. for OASIS-TRT-20_jointfusion_DKT31_CMA_labels_in_MNI152_v2.nii)? Is it based on one brain, or on an average of multiple brains?

Thanks,

Tobias


#2

Thank you very much! And thank you for pointing out that the atlas description is missing. I used to have the following description on the mindboggle data web page (http://www.mindboggle.info/data.html) and should bring it back:

  • OASIS-TRT-20 joint fusion atlas in OASIS-30 and in MNI152 space (2013)
  • Corresponding label probabilities in OASIS-30 and in MNI152 space

Joint fusion (Hongzhi Wang, 2013; distributed with ANTs) was used to construct probabilistic label volumes incorporating the 20 OASIS-TRT brains, and from these a single maximum probability atlas with the winning labels. Joint fusion was performed on the set of 20 brains after antsRegistration warped them to the brain and cerebellum OASIS-30 Atropos template. Results are also given after affine transformation to the OASIS-30 Atropos template in MNI152 space.


#3

Thank you for your quick response!
Just to make sure I understand it correctly:
You labeled 20 brains, then from these determined label probabilities; the labels in OASIS-TRT-20_jointfusion_DKT31_CMA_labels_in_MNI152_v2.nii then correspond to the winning labels (based on some cutoff - which one?) of the probabilistic labels?
Did I get this right?
Tobias


#4

Correct. The “winning” labels are the maximum probability labels, so if the relative majority (say 17 of 20 votes) for a given voxel is the right amygdala, that is the label assigned to that voxel. See Hongzhi Wang’s 2013 paper for more details about the joint fusion algorithm.


#5

Wonderful, many thanks indeed, and keep up the good work!


#6

hi : mindboggle is a great tool. but really do not know what is the ID for brain image ? looking forward to your reply!
fuzhenrong
beihang university


#7

The original IDs for the 20 OASIS images that were used to construct the joint fusion atlas are listed here: https://osf.io/6p9qy/


#8

thank you for your reply!