Skip to main content

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
Back to article page

Radiation Oncology

ISSN: 1748-717X

Contact us