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Table 1 OAR dose constraints (assuming α/β ratio of 3 for rectum and bladder)

From: Toxicity report of once weekly radiation therapy for low-risk prostate adenocarcinoma: preliminary results of a phase I/II trial

Organ

Threshold dose

(Gy)

Volume above

limit (%)

Bladder

49

45

40

15

30

50

Rectum

46

43

37

15

30

50

Right/left femoral heads

32.5

0