Table 2 Changes of IVIM parameters and tumor size during the concurrent chemo- radiotherapy course

Diameter (cm)

4.17 ± 1.23

2.56 ± 1.26

1.14 ± 1.12

0.20 ± 0.53

f

0.12 ± 0.52

0.20 ± 0.90

0.22 ± 0.79

0.18 ± 0.58

D* (×10⁻³ mm²/s)

29.23 ± 26.49

33.73 ± 21.76

34.80 ± 21.00

34.44 ± 17.30

ADC (×10⁻³ mm²/s)

1.00 ± 0.11

1.39 ± 0.26

1.66 ± 0.17

1.67 ± 0.16

D (×10⁻³ mm²/s)

0.85 ± 0.12

1.09 ± 0.14

1.31 ± 0.11

1.41 ± 0.13