Table 2 Central-axis depth dose characteristics for 10 × 10 cm2 cone. Central-axis depth dose characteristics for 7 MeV, 9 MeV, and 9 MeV with 1 cm bolus of 10 × 10 cm2 cone. X con indicates X-ray contamination that is extracted from R p plus 2 cm
From: Design and evaluation of electron beam energy degraders for breast boost irradiation
Nominal energy (MeV) | Surface dose (%) | d max (cm) | R 90 (cm) | R 80 (cm) | R 50 (cm) | R p (cm) | E0 (MeV) | X con (%) |
|---|---|---|---|---|---|---|---|---|
7 | 88.8 | 1.16 | 1.83 | 2.07 | 2.59 | 3.35 | 6.03 | 1.3 |
9 | 80.7 | 2.05 | 2.74 | 2.99 | 3.54 | 4.39 | 8.25 | 1.2 |
9 with bolus | 91.3 | 1.05 | 1.74 | 1.99 | 2.54 | 3.33 | 5.92 | - |