Data in diffusion measurements

[anastasia-nik]

Hi! There are FA, trace etc for each tensor in diffusion measurements. However in many articles with two-tensor UKF tractography application it is not specified which of two tensor's data had been used. Could you explain what's the matter?
Thank you in advance.

[ljod]

Hi the tensor 1 is the tensor corresponding to the fiber that is tracked, so that is used in papers for analysis. Perhaps it is called the tract-specific FA or similar. For more information, this is a better question for Yogesh Rathi or for the authors of those articles.

[kvandeloo-97]

What is representative of radial diffusivity and axial diffusivity in the final .csv files?

[ljod]

Hi I'm not sure what you mean by "representative of," but axial and radial diffusivity are equal to the largest eigenvalue and the mean of the smaller two eigenvalues, respectively. I don't remember if these are measured by default in the csv files.