Table 6 Evaluation items by MRI only.

From: The usefulness of different imaging modalities in mandibular osteonecrosis and osteomyelitis diagnosis

 

Bacterial OM (n = 20)

ORN (n = 6)

MRONJ (n = 21)

Total (n = 47)

p value

T1-wI (Comparison with healthy bone marrow)

Low

20

6

21

47

–

Intermediate

0

0

0

0

T1-wI (Comparison with healthy masseter muscle)

Low

3

0

3

6

1.000

Intermediate

17

6

18

41

T1-wI (Comparison with healthy parotid gland)

Low

20

6

21

47

–

Intermediate

0

0

0

0

T2-wI (Comparison with healthy bone marrow)

Low

0

0

4

4

0.158

Intermediate

1

0

0

1

High

19

6

17

42

T2-wI (Comparison with healthy masseter muscle)

Low

0

0

1

1

0.318 

Intermediate

0

0

3

3

High

20

6

17

43

T2-wI (Comparison with healthy parotid gland)

Low

0

0

4

4

0.077

Intermediate

6

0

2

8

High

14

6

15

35

  1. OM osteomyelitis, ORN osteoradionecrosis, MRONJ medication-related osteonecrosis of the jaw, T1-wI T1-weighted images, T2-wI T2-weighted fat-suppressed images, Low: low signal intensity, Intermediate: intermediate signal intensity, High: high signal intensity.