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 3
Comparisons of PTV, OAR, and B-P dosimetric parameters between CRT plan and ARC plan
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| | Dosimetric parameters | CRT plan | ARC plan | Difference | t value | P value |
| | PTV | | | | | | | Minimum dose/cGy | 4353.7169.41 | 4285.12159.09 | 68.59165.02 | 1.314 | 0.221 | | Maximum dose/cGy | 5397.29 82.69 | 5348.3061.22 | 48.99100.59 | 1.540 | 0.158 | | Median dose/cGy) | 5001.5614.33 | 5025.606.27 | -24.0417.14 | -4.433 | 0.002 | | Conformity index | 0.690.05 | 0.880.02 | -0.190.04 | -15.148 | 0.001 | | Homogeneity index | 0.210.02 | 0.210.04 | -0.000.04 | -0.330 | 0.749 | | V105 (%) | 15.113.64 | 0.74.84 | 14.3716.43 | 2.766 | 0.022 | | OAR | | | | | | | Spinal cord Maximum dose | 3214.23285.34 | 2383.08353.89 | 831.15476.47 | 5.516 | 0.001 | | Esophagus | | | | | | | V50 (%) | 8.499.94 | 19.4812.51 | -10.998.11 | -4.286 | 0.002 | | Maximum dose | 5110.67113.32 | 4863.61253.24 | -611.561105.668 | 0.651 | 0.531 | | Heart | | | | | | | V20 (%) | 23.7721.93 | 13.9813.25 | 3.2116.34 | 3.369 | 0.008 | | V30 (%) | 11.9812.97 | 6.666.03 | 0.2910.33 | 2.393 | 0.040 | | V40 (%) | 6.927.43 | 3.793.21 | 0.046.23 | 2.295 | 0.047 | | V45 (%) | 5.155.48 | 2.892.45 | 0.014.49 | 2.278 | 0.049 | | Mean dose | 1061.75777.82 | 698.58652.93 | 100.58625.75 | 3.129 | 0.012 | | Normal lung | | | | | | | V5 (%) | 54.248.06 | 56.066.17 | -5.331.66 | -1.186 | 0.266 | | V10 (%) | 37.288.74 | 36.617.24 | -1.713.07 | 0.643 | 0.536 | | V13 (%) | 33.627.95 | 29.206.20 | 1.827.01 | 3.860 | 0.004 | | V20 (%) | 26.627.23 | 19.493.34 | 3.5910.68 | 4.551 | 0.001 | | V30 (%) | 11.591.64 | 8.850.90 | 1.553.91 | 5.244 | 0.001 | | Mean dose | 1006.29522.53 | 972.39362.74 | -344.47412.264 | 0.203 | 0.844 | | B-P | | | | | | | V5(%) | 27.318.42 | 26.153.14 | -3.976.30 | 0.514 | 0.619 | | V10(%) | 18.975.53 | 16.542.41 | -0.865.72 | 1.667 | 0.130 | | V15(%) | 16.034.77 | 10.971.80 | 2.287.82 | 4.121 | 0.003 | | V20(%) | 12.494.87 | 6.461.43 | 3.228.84 | 4.861 | 0.001 | | V25(%) | 7.333.41 | 3.720.93 | 1.645.58 | 4.142 | 0.003 | | V30(%) | 4.292.76 | 2.130.55 | 0.393.92 | 2.774 | 0.022 | | V35(%) | 2.942.29 | 1.220.29 | 0.183.27 | 2.532 | 0.032 | | V40(%) | 1.951.32 | 0.660.14 | 0.392.19 | 3.244 | 0.010 | | V45(%) | 1.241.06 | 0.250.04 | 0.241.74 | 2.999 | 0.015 | | V50(%) | 0.230.24 | 0.000.00 | 0.010.05 | 3.748 | 0.005 |
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