Table 2.
Dosimetric parameters of thoracic radiotherapy for the organs at risk.
| Organ at risk | Dosimetric parameter | Mean ± SD |
|---|---|---|
| Lungs | Dmean (GyE) | 11.62 ± 2.56 |
| V5 (%) | 36.18 ± 9.86 | |
| V20 (%) | 23.01 ± 5.92 | |
| Ipsilateral lung | Dmean (GyE) | 19.55 ± 3.09 |
| Contralateral lung | Dmean (GyE) | 2.61 ± 3.09 |
| Heart | Dmean (GyE) | 5.49 ± 2.52 |
| Esophagus | Dmax (GyE) | 63.42 ± 17.20 |
| Spinal cord | Dmax (GyE) | 20.06 ± 11.16 |
SD, standard deviation; Gy, gray; GyE, gray equivalent to photon; Dmean, mean dose; Dmax, maximum dose; V5, percentage of volume receiving >5 Gy; V20, percentage of volume receiving >20 Gy.