The polarity of bvec, which is an important MPG Gradient Table in diffusion MRI, is not compatible with MRI equipment and analysis software. Since there are more than 200 subjects, it is difficult to modify each one. Therefore, I created a script that can arbitrarily change the polarity in the bvec file in Python. Isn't there a command to modify the polarity of bvec in FSL or MRtrix?
For detailed explanation and code, see Diffusion MRI bvec file polarity change by Python.
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