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Table 2 Summary statistics of the diffusion parameters and their variations during treatment

From: Radiation-induced parotid changes in oropharyngeal cancer patients: the role of early functional imaging and patient−/treatment-related factors

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
  1. 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