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Table 2 Dosimetric simulation of the D90 HRCTV (EQD2) at different uncertainty level

From: Intra-fractional dosimetric analysis of image-guided intracavitary brachytherapy of cervical cancer

Uncertainty

5%

10%

EQD2(Gy)

89.6 ± 1.2

89.7 ± 2.5

 < 90 Gy

63.0%

55.6%

 < 89 Gy

31.7%

38.8%

 < 88 Gy

10.2%

25.1%

 < 87 Gy

1.9%

13.5%

 < 86 Gy

0.2%

6.1%

 < 85 Gy

0.03%

2.8%

 < 80 Gy

0

0

  1. The di is 6 Gy for each fraction, and the σ2 are 0.3 Gy and 0.6 Gy when the uncertainty are 5% and 10%, respectively. And the total EQD2 is the sum of the BT dose and EBRT dose (49.56 Gy, 50.4 Gy/28f, α/β = 10)