Fig. 2.

The performance of the simple fitting algorithm for an isotropic voxel (A) and an anisotropic voxel (B). h_t = 4h was used for the anisotropic voxel. The performance was tested for a total of 25,200 combinations (36 number densities, 10 diffusion coefficients, 10 velocities and 7 flow angles). M_E = 1 – M_S – M_F. Data are presented in mean ± SD. Each point represents the mean and error for the combination of other parameters (e.g., the point of M_S = 0.5 in the M_S plot shows the mean and error of the 700 results from the combination of 10 diffusion coefficients, 10 velocities and 7 flow angles where M_S = 0.5).