Table 5.
Reproducibility in volunteers for D. The table shows the mean and standard deviation values for the measured D together with the associated CV and ICC in grey matter (GM) and white matter (WM) in all scans, and in eight separate regions in 56 of the scans. All terminology is the same as for Table4
| Volunteers | Mean | Inter-scanner (intra-volunteer) | Inter-volunteer (intra-scanner) | Intra-scanner (intra-volunteer) | ICCinter | ICCintra | |||
|---|---|---|---|---|---|---|---|---|---|
| DWI – IVIM – D | Overall | GM | ×10−3 mm2 s−1 | 0.7495 | ±0.0207 | ±0.0186 | ±0.0159 | 0.63 | 0.37 |
| CV | 2.8% | 2.5% | 2.1% | ||||||
| WM | ×10−3 mm2 s−1 | 0.6506 | ±0.0249 | ±0.0115 | ±0.0108 | 0.84 | 0.16 | ||
| CV | 3.8% | 1.8% | 1.7% | ||||||
| Cerebellum | Cortex (GM) | ×10−3 mm2 s−1 | 0.7283 | ±0.0577 | ±0.0139 | ±0.0272 | 0.82 | 0.18 | |
| CV | 7.9% | 1.9% | 3.7% | ||||||
| WM | ×10−3 mm2 s−1 | 0.6491 | ±0.0501 | ±0.0083 | ±0.0381 | 0.63 | 0.37 | ||
| CV | 7.7% | 1.3% | 5.9% | ||||||
| Brain stem | All | ×10−3 mm2 s−1 | 0.6819 | ±0.0665 | NE | ±0.0505 | 0.63 | 0.37 | |
| CV | 9.8% | NE | 7.4% | ||||||
| Cerebrum | WM | ×10−3 mm2 s−1 | 0.7035 | ±0.0294 | ±0.0098 | ±0.0157 | 0.78 | 0.22 | |
| CV | 4.2% | 1.4% | 2.2% | ||||||
| Basal ganglia | ×10−3 mm2 s−1 | 0.7184 | ±0.0308 | ±0.0145 | ±0.0209 | 0.68 | 0.32 | ||
| CV | 4.3% | 2.0% | 2.9% | ||||||
| Thalamus | ×10−3 mm2 s−1 | 0.7367 | ±0.0040 | ±0.0178 | ±0.0213 | 0.78 | 0.22 | ||
| CV | 5.4% | 2.4% | 2.9% | ||||||
| Choroid plexus | ×10−3 mm2 s−1 | 1.8489 | ±0.2281 | ±0.1443 | ±0.2077 | 0.55 | 0.45 | ||
| CV | 12.3% | 7.8% | 11.2% | ||||||
| Optic chiasm | ×10−3 mm2 s−1 | 0.9730 | ±0.0755 | ±0.0962 | ±0.2815 | 0.07 | 0.93 | ||
| CV | 7.8% | 9.9% | 28.9% | ||||||