Skip to main content

Advertisement

Table 5 Calculation of biological effective doses (BED) for the rectal tumor (α/β = 10 Gy) and late normal tissue toxicity (α/β = 3 Gy)

From: Prospective phase II study of preoperative short-course radiotherapy for rectal cancer with twice daily fractions of 2.9 Gy to a total dose of 29 Gy - Long-term results

  29 Gy (10 × 2.9 Gy) 25 Gy (5 × 5 Gy) 45 Gy (25 × 1.8 Gy) 50.4 Gy (28 × 1.8 Gy)
Tumor OTT (α/β = 10 Gy) 37.4 37.5 37.5 42.1
Tumor (α/β = 10 Gy) 37.4 37.5 53.1 59.5
Normal tissue (α/β = 3 Gy) 57.0 66.7 72.0 80.6
  1. Overall treatment time (OTT) was considered (first row) or not (second row) at calculation of BED doses to the tumor.