Table 2.
Dosimetric comparison between patients with and without G2+ radiation pneumonitis (mean values)
| Factor | Overall (N=88) | No (N=64) | Yes (N=24) | p- value |
|---|---|---|---|---|
| Ipsilateral lung V20 (%) | 20.1 (4.3, 64.0) | 18.6 (4.3, 52.6) | 24.6 (11.9, 64.0) | 0.001 |
| Ipsilateral lung mean dose (cGy) | 1055 (314, 3428) | 958 (314, 2524) | 1304.5 (715, 3428) |
0.001 |
| Contra lung V20 (%) | 0 (0, 30.2) | 0 (0, 4.73) | 0 (0, 30.2) | 0.445 |
| Contra lung mean dose (cGy) | 250 (49, 1443) | 215.5 (49, 580) | 317 (133, 1443) | 0.028 |
| Overall lung V20 (%) | 9.9 (2.3, 29.1) | 9.1 (2.3, 27.4) | 12.93 (6.6, 29.1) | <.001 |
| Overall lung mean dose (cGy) | 655 (203, 1599) |
561.5 (203, 1555) |
807 (475, 1599) | <.001 |