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Table 3 Comparison of parameters to evaluate dose variation with in the target for photon and proton craniospinal irradiation (n = 18)

From: Comparison of therapeutic dosimetric data from passively scattered proton and photon craniospinal irradiations for medulloblastoma

CTV dosimetric parameters Photons Protons  P value, Wilcoxian Signed Rank test Significance level
Mean SD Mean SD
CI 0.99 0.01 0.99 0.009 5.28E-01 NS
HI 1.05 0.009 1.04 0.012 2.47E-03 <0.01
Dmax 28.13 15.21 26.05 7.868 1.96E-04 <0.01