Research Article
The Dosimetric Comparisons of CRT, IMRT, ARC, CRT+IMRT, and CRT+ARC of Postoperative Radiotherapy in IIIA-N2 Stage Non-Small-Cell Lung Cancer Patients
Table 10
Comparisons of PTV, OAR, and B-P dosimetric parameters between ARC plan and CRT+ARC plan
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| | Dosimetric parameters | ARC plan | CRT+ARC plan | Difference | t value | P value |
| | PTV | | | | | | | Minimum dose/cGy | 4285.12159.09 | 4305.23114.48 | -20.11157.12 | -0.405 | 0.695 | | Maximum dose/cGy | 5348.3061.22 | 5328.3258.00 | 19.9837.33 | 1.692 | 0.125 | | Median dose/cGy) | 5025.606.27 | 5068.4477.68 | -42.8479.30 | -1.708 | 0.122 | | Conformity index | 0.880.02 | 0.860.02 | 0.010.01 | 3.500 | 0.007 | | Homogeneity index | 0.210.04 | 0.200.03 | 0.010.03 | 0.633 | 0.543 | | V105 (%) | 0.74.84 | 3.759.42 | -3.019.58 | -0.993 | 0.347 | | OAR | | | | | | | Spinal cord Maximum dose | 2383.08353.89 | 2870.81535.92 | -487.73224.92 | -6.857 | 0.001 | | Esophagus | | | | | | | V50 (%) | 17.7914.08 | 17.0212.75 | 2.455.72 | 1.358 | 0.207 | | Maximum dose | 5270.17109.33 | 5229.3479.93 | -365.72383.31 | -0.954 | 0.365 | | Heart | | | | | | | V20 (%) | 20.7821.65 | 20.5621.20 | -6.578.02 | -2.592 | 0.029 | | V30 (%) | 9.8310.15 | 14.3913.89 | -7.727.93 | -3.080 | 0.013 | | V40 (%) | 4.875.24 | 4.884.73 | -1.091.58 | -2.193 | 0.056 | | V45 (%) | 3.593.84 | 2.942.42 | -0.040.19 | -0.734 | 0.481 | | Mean dose | 932.07702.92 | 872.64788.90 | -174.05470.84 | -1.169 | 0.272 | | Normal lung | | | | | | | V5 (%) | 49.596.17 | 48.779.22 | 7.305.31 | 4.346 | 0.002 | | V10 (%) | 35.137.42 | 28.305.43 | 8.302.97 | 8.832 | 0.001 | | V13 (%) | 30.316.38 | 22.404.28 | 6.793.67 | 5.856 | 0.001 | | V20 (%) | 22.224.48 | 14.742.08 | 4.752.39 | 6.281 | 0.001 | | V30 (%) | 8.631.47 | 10.360.81 | -1.501.06 | -4.461 | 0.002 | | Mean dose | 1040.41147.82 | 952.15120.92 | 20.2491.13 | 0.222 | 0.829 | | B-P | | | | | | | V5(%) | 26.153.14 | 25.2212.40 | 0.9311.79 | 0.250 | 0.808 | | V10(%) | 16.542.41 | 14.866.45 | 1.686.01 | 0.885 | 0.399 | | V15(%) | 10.971.80 | 10.134.22 | 0.853.89 | 0.692 | 0.506 | | V20(%) | 6.461.43 | 7.992.65 | -1.532.15 | -2.250 | 0.051 | | V25(%) | 3.720.93 | 6.831.99 | -3.111.51 | -6.512 | 0.001 | | V30(%) | 2.130.55 | 5.331.80 | -3.191.51 | -6.645 | 0.001 | | V35(%) | 1.220.29 | 3.421.89 | -2.191.74 | -3.973 | 0.003 | | V40(%) | 0.660.14 | 1.581.71 | -0.921.65 | -1.766 | 0.111 | | V45(%) | 0.250.04 | 0.681.19 | -0.431.18 | -1.147 | 0.281 | | V50(%) | 0.000.0 | 0.120.33 | -0.110.32 | -1.105 | 0.298 |
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