Table 3.
Dosimetric results of IMRT for 7 patients with cervical and upper thoracic esophageal cancer
| Patient No. | Dose (Gy) | GTV volume (cm3) | PTV mean dose (Gy) | PTV min % | PTV max % | PTV SD % | Lung V20 (Gy) | Lung mean dose (Gy) | Spinal cord max (Gy) |
| 1 | 64.8 (GTV) | 58 | 70.5 | 96.5 | 117.9 | 4.9 | 18.9 | 12.0 | 42.8 |
| 50.4 (CTV) | 66.4 | 104.8 | 149.6 | 11.1 | |||||
| 50.4 (sup) | 61.3 | 101.6 | 149.2 | 11.9 | |||||
| 2 | 59.9 (GTV) | 53 | 65.0 | 91.2 | 122.9 | 6.0 | 28.6 | 13.4 | 25.7 |
| 50.4 (CTV) | 58.7 | 103.9 | 139.4 | 6.6 | |||||
| 3 | 64.8 (GTV) | 85 | 68.6 | 97.8 | 117.5 | 3.7 | 10.3 | 6.6 | 37.2 |
| 51.7 (CTV) | 62.3 | 93.8 | 121.2 | 9.2 | |||||
| 46 (sup) | 54.2 | 100 | 143 | 8.1 | |||||
| 4 | 59.4 (GTV) | 17 | 65.0 | 97.1 | 119.1 | 4.3 | 24.2 | 11.6 | 39.2 |
| 5 | 66 (GTV) | 78 | 67.3 | 97.9 | 109.2 | 4.9 | 26.8 | 12.6 | 45.8 |
| 6 | 66 (GTV) | 229 | 68.0 | 98.2 | 110.9 | 4.8 | 21.9 | 7.7 | 40.2 |
| 56 (CTV + neck) | 59.8 | 101.1 | 122.9 | 9.4 | |||||
| 7 | 66 (GTC) | 169 | 66.4 | 99.4 | 111.8 | 5.7 | 36 | 17.6 | 41.8 |
| 60 (CTV) | 65.7 | 97 | 121.6 | 6.7 | |||||
| 60 (sup) | 67.1 | 105 | 116.8 | 5.4 |
GTV: Gross tumor volume; CTV: Clinical target volume; PTV: Planning target volume; sup: Bilateral supraclavicular region; min: Minimum; max: Maximum; SD: Standard deviation.