Table 2 The IVIM and DCE MR parameters of parotid glands pre-RT and post-RT

 ADC (10⁻³ mm²/s)

0.88 ± 0.15

1.45 ± 0.20

<0.001^a

 D (10⁻³ mm²/s)

0.72 ± 0.13

1.16 ± 0.21

<0.001^a

 D* (10⁻³ mm²/s)

36.3 ± 22.7

50.8 ± 27.4

0.024^a

 f (%)

13.3 ± 3.9

19.2 ± 5.6

<0.001^a

 MRE (%)

182.0 ± 41.3

287.1 ± 41.4

<0.001^a

 TTP (s)

42.4 ± 28.9

53.7 ± 26.0

0.037^a

 Wash in Rate (i/s)

97.5 ± 44.4

159.8 ± 54.5

<0.001^a