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Table 2 Biologically effective doses applied by conventionally fractionated regimens BEQ2Gy (5 × 2 Gy with d = 2 Gy) in dependency on α/β that are isoeffective to a single dose DS

From: Radiotherapeutic treatment options for oligotopic malignant liver lesions

DS [Gy]

BEQ2Gy [Gy] α/β = 1.5 Gy

BEQ2Gy [Gy] α/β = 2 Gy

BEQ2Gy [Gy] α/β = 3 Gy

BEQ2Gy [Gy] α/β = 5 Gy

BEQ2Gy/BED [Gy] α/β = 10 Gy

5

10

9

7

5

3/8

8

23

20

16

11

7/14

10

34

30

24

17

10/20

12

48

42

34

24

14/26

15

73

64

51

36

21/38

18

103

90

72

51

30/50

20

126

110

88

63

37/60

25

189

169

140

107

73/88

30

274

225

192

137

80/120

35

365

324

266

200

131/158

  1. For comparison the BED (for d → 0) are shown for α/β = 10 Gy
  2. Ds, single dose; BEQ2Gy, isoeffective cumulative dose for conventionally fractionated regimens of 5 × 2 Gy per week; BED, biologically effective dose for a low-dose rate regimen with d → 0
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Radiation Oncology

ISSN: 1748-717X

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