文献复现--freewater-DTI-单壳数据的自由水成像

文献链接：https://www.nature.com/articles/s41598-021-86505-7

import os, sys
import numpy as np
import matplotlib.pyplot as plt
from dipy.core.gradients import gradient_table
from dipy.data import get_fnames
from dipy.io.gradients import read_bvals_bvecs
from