B1+ transmit field corrected myelin maps

[Panos Fotiadis]

Hello,

I had a question concerning your (really interesting) recently submitted paper

https://www.biorxiv.org/content/10.1101/2021.08.08.455570v1.full.pdf :

I recently processed some of my group's scans using the HCP Pipeline (https://github.com/Washington-University/HCPpipelines/wiki/Installation-and-Usage-Instructions#running-the-hcp-pipelines-on-example-data; version 4.3) in order to generate T1/T2-weighted ratio maps (i.e., T1wDividedByT2w.nii.gz) which I would then use to extract each ROI's 'myelin content'.

 

1. Just to be sure: this pipeline does not currently apply the B1+ transmit field correction mentioned in your paper when generating those myelin maps, right? 

2. Are the T1wDividedByT2w.nii.gz files provided with the latest HCP_1200 release corrected for B1- and B1+ effects, or just B1-?

3. Assuming that the currently provided T1wDividedByT2w.nii.gz files have not been corrected for B1+ inhomogeneities, is the code to do that (basically what the attached paper is proposing) currently available?

Thank you in advance!

Best,

Panos

[Glasser, Matt]

1. No
2. Not yet
3. We are working on it.

 

Matt.

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[Panos Fotiadis]

Sounds great, thank you Matt!

Cheers,

Panos

[Bartosz Kossowski]

Hi,

I also came across the paper published now in the Neuroimage. Please let me know if the code for pseudo-transmit field correction is already available.

Regards,

Bartosz Kossowski

[Aaron]

I am also interested in the code for pseudo-transmit field correction (https://pubmed.ncbi.nlm.nih.gov/35697132/).

In addition to that, I am interested in the temporal ICA code for removing the global signal (https://pubmed.ncbi.nlm.nih.gov/29753843/) and the areal classifier (https://pubmed.ncbi.nlm.nih.gov/27437579/).

Thank you!

[Glasser, Matt]

Temporal ICA is available.  The rest are still pending.

Matt.

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