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Table 3 Impact on setup technique on D 95 , D 05 and D av of the PTV as compared to the original treatment plan

From: Frameless fractionated stereotactic radiation therapy of intracranial lesions: impact of cone beam CT based setup correction on dose distribution

PTV Laser setup CBCT setup
D95 D05 Dav D95 D05 Dav
mean −12.3% −3.9% −5.9% −0.4% −0.5% −0.1%
max −31.8% −17.7% −20.4% −0.8% −3.9% −0.4%
min −1.7% −0.2% −0.5% 0.2% 0.2% 0.4%
  1. Changes are given in % of the respective dose value of the treatment plan, negative values represent a dose reduction and positive values an increase.