Parotid

ADC change

(Mean ± SD)

Sub mandibular

ADC change

(Mean ± SD)

χ2

p-value

Site

Larynx

Oropharynx

Hypopharynx

14.64 ± 12.73

14.53 ± 10.21

15.77 ± 4.63

15.55 ± 12.34

18.06 ± 11.45

17.25 ± 5.69

15.62

0.018*

Sub site

Glottic

Supraglottic

Tongue

Post cricoids

14.32 ± 11.98

15.11 ± 12.36

14.56 ± 10.10

15.77 ± 2.64

15.7 ± 13.24

14.44 ± 12.04

18.06 ± 14.12

17.25 ± 5.66

12.86

0.021*

Performance

0/1

2

12.23 ± 10.62

14.87 ± 11.58

13.02 ± 11.42

15.62 ± 12.57

6.88

0.441

Stage

II

III

IV

11.58 ± 9.33

14.04 ± 10.29

9.18 ± 7.86

13.25 ± 10.96

15.02 ± 13.32

10.35 ± 8.76

11.21

0.054

T stage

T2

T3

T4

10.23 ± 8.69

13.52 ± 11.46

12.36 ± 10.68

12.85 ± 9.89

15.21 ± 12.85

12.79 ± 10.56

10.00

0.042*

N stage

N0

N1

N2

N3

12.48 ± 10.36

14.75 ± 12.31

15.29 ± 12.64

11.57 ± 9.82

14.36 ± 11.55

15.91 ± 12.89

15.88 ± 9.88

12.24 ± 10.23

6.88

0.031*