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Table 2 Summary of the dosimetric results for OARs

From: A comparison of liver protection among 3-D conformal radiotherapy, intensity-modulated radiotherapy and RapidArc for hepatocellular carcinoma

  3DCRT IMRT RA P-value
a b c
Liver Dmean (Gy) 20.57 ± 7.12 22. 34 ± 7.33 20.51 ± 7.12 0.045 0. 051 0.060
Liver V5 (%) 68.9 ± 19.23 70.43 ± 18.92 76.34 ± 19.12 0.02 0.015 0.007
Liver V10 (%) 60.37 ± 21.54 65.12 ± 21.62 64.71 ± 21.63 0.274 0.031 0.004
Liver V20 (%) 48. 34 ± 21.13 47.73 ±22.81 43. 94 ± 20.10 0.34 0.23 0.012
Liver V30 (%) 22.27 ±17..30 22.57 ± 15.73 21.93 ±14..30 0.002 0.450 0.013
Liver V40 (%) 27.73 ± 18.73 17.94 ±10.13 17.93 ± 10.24 0.012 0.453 0.038
Stomach Dmean (Gy) 14.3 ± 13.93 14.36 ±10.13 16.13 ±12..34 0.231 0.937 0.073
Left kidney Dmean (Gy) 2.03 ± 2.45 2.13 ±2.98 2.01 ±2.94 0.45 0.270 0.110
Right kidney Dmean (Gy) 6.73 ±8.96 5.13 ± 6.73 4.36 ±6.58 0.134 0.078 0.734
Spinal cord D1% (Gy) 20.20 ± 8.34 19.23 ± 9.70 14.23 ± 7.92 0.721 0.210 0.372
  1. Statistical significance (p <0.05) was reported between couples from paired t-test analysis. Abbreviations: 3DCRT 3-D conformal radiation therapy, IMRT intensity-modulated radiation therapy, RA RapidArc. V x the volume of the OARs receiving the dose > x Gy. D mean the mean dose for the organ, D 1% the maximal dose at 1% volume for the organ. a, IMRT versus 3DCRT; b, IMRT versus RA; c, RA versus 3DCRT.