I am working with a MRI dataset where we inject dye into a person's wrist and measure intensity per time on a voxel-by-voxel basis. I am trying to determine if it is possible to identify certain tissues based upon their curve similarity (they have unique looking intensity curves).
I am using Euclidean distance k-means in order to try this. The data seems to be OK, but I need a way to determine uniformity between curves—how similar curves in a group are to one another. Any suggestions on how to do this?