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Table 3 Summary of dosimetric indices averaged from the treatments plans of 27 patients

From: A treatment planning study comparing IMRT techniques and cyber knife for stereotactic body radiotherapy of low-risk prostate carcinoma

Index HT Mean ± SD SW Mean ± SD VMAT Mean ± SD CK Mean ± SD
Homogeneity index, HI 0.18 ± 0.01* 0.21 ± 0.01 0.19 ± 0.01 0.21 ± 0.04*
Conformation number, CN 0.85 ± 0.05 0.81 ± 0.05 0.87 ± 0.03 0.87 ± 0.06
ICRU Conformity index, CIICRU 1.16 ± 0.08 1.22 ± 0.07 1.13 ± 0.04 1.08 ± 0.07
Coverage index, CΔ 0.16 ± 0.08 0.23 ± 0.07 0.14 ± 0.04 0.11 ± 0.06
Coverage index, COV 0.99 ± 0.01 0.99 ± 0.01 0.99 ± 0.01 0.97 ± 0.02
  1. Abbreviations: VMAT Volumetric Modulated Arc Therapy, SW Sliding Window, HT Helical tomotherapy, CK Cyber Knife, SD Standard deviation, HI Homogeneity index, CN Conformation number, CIICRU ICRU conformity index, C∆ Coverage index, COV Coverage index COV; *-values with statistically significant difference (p < 0.05)