Table 4. Summary of the effects of changes of acquisition parameters: b-value (800 to 1300 s/mm 2), number of gradients (6 to 61) and voxel resolution (low Res.-3- to high Res.-2mm 3-).
μ stands for average value, σ stands for standard deviation.
| ↑ ΔB | ↑ ΔR | ↑ ΔG | |
| FA | ↓ μ (at HighRes) | ↑ μ | ↓ ↓ μ |
| MD | ↓ ↓ μ | ||
| ↓ ↓ σ | |||
| AD | ↓ μ | ↑ μ (spec. on G = 6) | ↓ ↓ μ |
| ↓ σ | ↓ σ | ↓ σ | |
| RD | ↓ μ | ↑ ↑ μ (spec. on G = 6) | ↑ ↑ μ (spec. at LowRes) |
| ↓ σ (spec. at LowRes) | |||
| Length | ↑ ↑ μ (GT) | ↑ ↑ μ (RKT) | |
| ↓ σ (RKT) (spec. on G = 6) | ↑ ↑ σ (RKT) | ||
| Volume | ↓ ↓ μ (GT), ↓ μ (RKT) | ||
| Number of fibers | ↑ μ (GT), ↑ ↑ μ (RKT) | ↑ ↑ ↑ μ (RKT) | |
| ↑ σ (GT), ↑ ↑ σ (RKT) | ↑ ↑ ↑ σ (RKT) |