Table 1.
Mean and standard deviation (range) of the ADC value (10−3 mm2 s−1) of malignant tumours and infection of masticator space
| Pathology | ADC value |
| Malignant tumours (n = 34)a | 0.91 ± 0.21 (0.55–1.25) |
| Rhabdomyosarcoma (n = 9) | 0.77 ± 0.10 (0.66–0.91) |
| Non-Hodgkin lymphoma (n = 4) | 0.59 ± 0.04 (0.55–0.65) |
| Ewing sarcoma (n = 2) | 0.78 ± 0.08 (0.72–0.84) |
| Synovial sarcoma (n = 2) | 0.94 ± 0.07 (0.94–0.95) |
| Fibrosarcoma (n = 2) | 0.89 ± 0.07 (0.84–0.95) |
| Undifferentiated sarcoma (n = 1) | 0.83 |
| Granulocytic sarcoma (n = 1) | 0.97 |
| Malignant fibrous histiocytoma (n = 1) | 0.99 |
| Haemangioperictyoma (n = 1) | 0.93 |
| Squamous cell carcinoma (n = 8) | 1.14 ± 0.11 (0.97–1.25) |
| Nasopharyngeal carcinoma (n = 3) | 1.16 ± 0.07 (1.07–1.21) |
| Infection (n = 15)b | 1.59 ± 0.32 (0.75–1.87) |
| Odontogenic infection (n = 8) | 1.67 ± 0.14 (1.44–1.87) |
| Necrotizing otitis externa (n = 5) | 1.76 ± 0.08 (1.65–1.85) |
| Invasive fungal infection (n = 2) | 0.87 ± 0.16 (0.75–0.98) |
ADC, apparent diffusion coefficient.
a
Significant difference (p = 0.001) in ADC value between malignancy and infection. Significant difference (p = 0.001) in ADC value between squamous cell carcinoma and soft tissue sarcomas.
b
Significant difference (p = 0.001) in ADC value between bacterial and fungal infections.