It is not immediately clear to me how to start from non-DWI inputs (if at all possible).
Suppose that I have a data-source completely unrelated to MRI. I can generate a “diffusion tensor” (something equivalent to that in any case) for the voxels in the data, and would like to do deterministic tractography.
As far as I can see, I would like to run tckgen() with the Tensor_Det algorithm, but skip the diffusion tensor fitting step. Can I do that?
Are there other issues or pitfalls that I fail to see, that will prevent me from using your impressive framework for visualization and analysis?