Table 1 Dosimetric comparison between proton beam therapy and photon beam therapy
OAR | DVH parameter | PBT | IMRT (VMAT) |
|---|---|---|---|
Lung | V20 (%) | 2.02 | 21.98 |
V5 (%) | 3.91 | 66.6 | |
Mean dose (Gy) | 1.15 | 12.3 | |
Heart | V40 (%) | 4.39 | 7.8 |
V30 (%) | 5.75 | 19.7 | |
V20 (%) | 7.33 | 44.1 | |
Mean dose (Gy) | 3.92 | 18.65 | |
Esophagus | Maximum dose (Gy) | 0.84 | 32.5 |
Spinal cord | Maximum dose (Gy) | 0 | 18.643 |