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 6
Comparisons of PTV, OAR, and B-P dosimetric parameters between IMRT plan and ARC plan
.
| | Dosimetric parameters | IMRT plan | ARC plan | Difference | t value | P value |
| | PTV | | | | | | | Minimum dose/cGy | 3936.34189.77 | 4285.12159.09 | -348.78200.06 | -5.513 | 0.001 | | Maximum dose/cGy | 5350.0861.15 | 5348.3061.22 | 1.7850.53 | 0.111 | 0.914 | | Median dose/cGy) | 4979.0877.62 | 5025.606.27 | -46.5278.50 | -1.874 | 0.094 | | Conformity index | 0.800.04 | 0.880.02 | -0.080.05 | -5.381 | 0.001 | | Homogeneity index | 0.280.04 | 0.210.04 | 0.070.05 | 4.768 | 0.001 | | V105 (%) | 2.924.38 | 0.74.84 | 2.183.80 | 1.812 | 0.103 | | OAR | | | | | | | Spinal cord Maximum dose | 2636.20179.98 | 2383.08353.89 | 253.12378.72 | 2.114 | 0.064 | | Esophagus | | | | | | | V50 (%) | 17.7914.08 | 19.4812.51 | -1.6911.39 | -0.469 | 0.650 | | Maximum dose | 5270.17109.33 | 4863.61253.24 | 406.551182.83 | 1.087 | 0.305 | | Heart | | | | | | | V20 (%) | 20.7821.65 | 13.9813.25 | 6.808.88 | 2.423 | 0.038 | | V30 (%) | 9.8310.15 | 6.666.03 | 3.164.18 | 2.391 | 0.040 | | V40 (%) | 4.875.24 | 3.793.21 | 1.092.11 | 1.628 | 0.138 | | V45 (%) | 3.593.84 | 2.892.45 | 0.701.44 | 1.530 | 0.160 | | Mean dose | 932.07702.92 | 698.58652.93 | 233.48338.59 | 2.181 | 0.057 | | Normal lung | | | | | | | V5 (%) | 49.596.17 | 56.066.17 | -6.473.86 | -5.309 | 0.001 | | V10 (%) | 35.137.42 | 36.617.24 | -1.471.72 | -2.697 | 0.025 | | V13 (%) | 30.316.38 | 29.206.20 | 1.122.19 | 1.619 | 0.140 | | V20 (%) | 22.224.48 | 19.493.34 | 2.733.41 | 2.529 | 0.032 | | V30 (%) | 8.631.47 | 8.850.90 | -0.221.52 | -0.467 | 0.651 | | Mean dose | 1040.41147.82 | 972.39362.74 | 68.01283.07 | 0.760 | 0.467 | | B-P | | | | | | | V5(%) | 22.912.48 | 26.153.14 | -3.221.64 | -6.214 | 0.001 | | V10(%) | 15.732.21 | 16.542.41 | -0.810.83 | -3.055 | 0.014 | | V15(%) | 12.551.83 | 10.971.80 | 1.570.98 | 5.053 | 0.001 | | V20(%) | 9.291.79 | 6.461.43 | 2.841.04 | 8.629 | 0.001 | | V25(%) | 5.191.40 | 3.720.93 | 1.480.97 | 4.816 | 0.001 | | V30(%) | 2.730.81 | 2.130.55 | 0.600.47 | 3.998 | 0.003 | | V35(%) | 1.510.46 | 1.220.29 | 0.280.32 | 2.804 | 0.021 | | V40(%) | 0.710.20 | 0.660.14 | 0.050.14 | 1.172 | 0.271 | | V45(%) | 0.280.10 | 0.250.04 | 0.040.09 | 1.404 | 0.194 | | V50(%) | 0.030.03 | 0.000.00 | 0.030.02 | 3.748 | 0.005 |
|
|
