Evaluation of facial nerves and parotid ductsa
| CNR | SNR | SI | SD | |
|---|---|---|---|---|
| Facial nerve (n = 36) | 7.7 ± 4.0 | 12.7 ± 4.2 | 91.2 ± 15.2 | 7.9 ± 2.5 |
| Parotid duct (n = 24) | 6.6 ± 3.4 | 11.5 ± 3.1 | 127.1 ± 51.2 | 11.6 ± 4.9 |
| P value (ANOVA)b | .266 (1.261) | .258 (1.305) | 0 (16.366) | 0 (15.211) |
| P value (paired t test)b | .144 (1.514) | .144 (1.514) | 0 (−4.232) | .001 (−3.882) |
a Data are presented as mean ± SD.
b ANOVA and paired t test, with data in parentheses, are F and t values, respectively. Parotid ducts (24 bilateral), which could be identified, were tested with ipsilateral facial nerves.