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Table 2 Trends in mean dose from simulation CT to fraction #5

From: Strict bladder filling and rectal emptying during prostate SBRT: Does it make a dosimetric or clinical difference?

  Prostate Bladder Bladder Trigone Rectum
Mean ± SD Mean ± SD Mean ± SD Mean ± SD
Simulation 102.80% ± 1.00% 42.10% ± 18.30% 93.50% ± 9.20% 43.90% ± 6.40%
Fraction 1 102.50% ± 1.00% 44.50% ± 18.80% 92.50% ± 9.90% 47.90% ± 8.70%
Fraction 2 103.40% ± 8.10% 46.80% ± 20.80% 92.10% ± 9.60% 47.50% ± 7.70%
Fraction 3 102.50% ± 1.00% 44.80% ± 19.80% 90.90% ± 10.80% 47.20% ± 8.30%
Fraction 4 102.50% ± 1.00% 46.40% ± 20.50% 90.20% ± 10.10% 47.10% ± 7.30%
Fraction 5 102.10% ± 3.20% 46.70% ± 19.90% 89.80% ± 10.50% 46.60% ± 7.10%
Δdose (%) − 0.60% ± 2.90% 4.50% ± 12.80% − 3.60% ± 9.60% 7.00% ± 12.90%
Δdose (Gy) − 0.2 ± 1.1 1.8 ± 4.8 − 1.5 ± 3.3 0.96 ± 1.87
  1. ΔDose denotes percentage or absolute mean dose change from simulation CT to fraction #5. Fraction #1–5 mean doses were significantly different from simulation dose in all OARs (all P < 0.01)