Table 2 The mean or maximum doses to organs at risk (OARs)
From: Treatment of nasopharyngeal carcinoma by tomotherapy: five-year experience
OARs | Mean value ± SD (Gy) | Range (Gy) |
|---|---|---|
Serial | Maximum dose | |
Brain stem | 50.53 ± 1.78 | 46.40–52.75 |
Spinal cord | 39.95 ± 1.95 | 35.86–42.90 |
Ipsi-lateral lens | 3.78 ± 0.78 | 2.63-4.70 |
Contra-lateral lens | 3.58 ± 0.70 | 2.60-4.60 |
Ipsi-lateral eye | 11.19 ± 3.10 | 6.76-17.69 |
Contra-lateral eye | 10.38 ± 2.51 | 6.53-15.86 |
Mandible | 63.64 ± 1.72 | 60.17-65.44 |
Chiasm | 38.20 ± 4.67 | 15.20-46.50 |
Parallel | Mean dose | |
Ipsi-lateral parotid gland | 22.07 ± 1.66 | 19.18-24.99 |
Contra-lateral parotid gland | 20.46 ± 2.27 | 15.48-24.56 |
Submandibular glands | 31.92 ± 2.65 | 27.85–37.09 |
Oral cavity | 32.49 ±6.09 | 22.19–41.06 |