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Table 3 Parameters for the LKB model for rectal toxicities [27]

From: Influence of daily imaging on plan quality and normal tissue toxicity for prostate cancer radiotherapy

Enpoint (toxicity grades)

TD50 (Gy)

Slope m

Volume factor n

Rectal bleeding (G1&2)

59.2

0.29

0.17

Proctitis (G1&2)

57.3

0.33

0.2

Rectal bleeding (G2)

68.9

0.16

0.18

Proctitis (G2)

68.3

0.22

0.17