Estimating Response functions from the DWI-data using an unsupervised method


#1

Hello all,

Could someone please let me know which function in MRTRIX deploys this method: " Unsupervised 3-tissue response function estimation from single-shell or multi-shell diffusion MR data without a co-registered T1 image" and how can I change the default value of FA?

Thank you,
Mahmoud


#2

Hi Mahmoud,
That appears to refer to dwi2response with the dhollander algorithm. There is an -fa argument to change the default FA value. If I’m not mistaken, this is only used in the initial “crude” separation of WM from CSF/GM, with the separations being refined later using other methods.

https://mrtrix.readthedocs.io/en/latest/reference/scripts/dwi2response.html#dwi2response-dhollander

John

Note: I am not an mrtrix developer; you may get more detailed responses from them.