Before I hit my head against it pointlessly, but because there could be value in it, how much luck am I likely to have have in making a surface from a fractional asisotropy volume, or similar (something non-tensor that's a bit more complicated but still FA like to the eye, or else eg mean diffusivity)
the point is to make masks from the caret surface that make sense in diffusion space (don't cross WM/GM boundaries as the diffusion measure sees them, rather than as a T1-like sequence sees them. this impacts on the probability that a streamline will hit a mask in gray or white, where gray always has low likelihood but white has high likelihood that the stream may be on its way somewhere else. ) It strikes me as worth something (registered to the rest...) in the context of everything else I'm looking at. It also strikes me as not worth it if it is just simply going to be yet another lengthy project to get it to work. Have surfaces been made from any diffusion maps using surfeit? mean diffusivity seems non-silly. I've got about ten million other maps. name it I have it. thanks as always best, Colin
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