Table 2.
Summary statistics of the diffusion parameters and their variations during treatment
| Parametera | before RT | at the 10th | Variation from baseline (%) | p |
|---|---|---|---|---|
| ADC (10−3 mm2/s) | 1.275 ± 0.158 | 1.434 ± 0.205 | 13.6 ± 18.2 | < 0.0001 |
| Dt (10−3 mm2/s) | 0.949 ± 0.153 | 1.072 ± 0.184 | 14.5 ± 20.8 | < 0.0001 |
| f(%) | 15.8 ± 4.7 | 16.3 ± 5.1 | 8.8 ± 41.1 | 0.420 |
| D* (10−3 mm2/s) | 28.4 ± 18.1 | 31.7 ± 2.1 | 57.9 ± 156.5 | 0.185 |
| D* × f (10−3 mm2/s) | 424 ± 305 | 466 ± 227 | 51.0 ± 129.1 | 0.076 |
aAverage ± standard deviation. P values refer to Wilcoxon test. Statistically significant p-values are bold. Abbreviations: ADC Apparent diffusion coefficient, Dt Tissue diffusion coefficient, D* Perfusion-related diffusion coefficient, f(%) Perfusion fraction, D* × f Product of D* by f