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Table 1 Biological effective dose (BED) calculations

From: Stereotactic body-radiotherapy boost dose of 18 Gy vs 21 Gy in combination with androgen-deprivation therapy and whole-pelvic radiotherapy for intermediate- or high-risk prostate cancer: a study protocol for a randomized controlled, pilot trial

 

Conventional dose (78 Gy/28 fractions)

18-Gy group

21-Gy group

Normal tissue BEDa (Gy)

130.0

130.7

146.7

Prostate cancer BEDa (Gy)

182.0

197.3

226.3

  1. aα/β ratio for normal tissue is 3, and 1.5 for prostate cancer
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Trials

ISSN: 1745-6215