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Table 4 Pearson correlation coefficient with three type gamma pass rate and DV, VD

From: Correction to: Retrospective dosimetry study of intensity-modulated radiation therapy for nasopharyngeal carcinoma: measurement-guided dose reconstruction and analysis

Structure DVH index Planar 2D GP(%) Global 3D GP(%) Organ specific 3D GP(%)
3 mm/3% 2 mm/2% 1 mm/1% 3 mm/3% 2 mm/2% 1 mm/1% 3 mm/3% 2 mm/2% 1 mm/1%
PTVnx V100% −0.038 − 0.106 − 0.252 0.044 − 0.145 − 0.238 − 0.328 − 0.405 − 0.267
D98% − 0.143 − 0.099 − 0.217 0.010 − 0.244 − 0.391 − 0.358 − 0.425 − 0.291
D2% −0.336 − 0.332 − 0.460 − 0.336 − 0.398 −0.409 − 0.754 − 0.810 * − 0.811 *
Dmean − 0.386 − 0.409 − 0.585 − 0.248 − 0.442 − 0.567 − 0.836 * − 0.968 * − 0.935 *
PTV1 V100% −0.035 − 0.217 − 0.210 − 0.174 − 0.232 − 0.258 − 0.166 −0.189 0.056
D95% 0.131 0.065 −0.110 0.162 −0.124 − 0.362 − 0.135 − 0.409 − 0.431
PTV2 V100% 0.046 0.152 0.118 −0.057 − 0.164 − 0.151 − 0.072 − 0.102 −0.006
D95% −0.168 −0.253 − 0.225 − 0.563 − 0.58 − 0.467 − 0.525 −0.458 − 0.376
SC D1cc −0.185 −0.157 − 0.216 − 0.309 − 0.478 − 0.443 − 0.595 − 0.664 − 0.650
BS V60 Gy − 0.147 − 0.260 − 0.118 − 0.111 − 0.376 − 0.421 − 0.140 − 0.384 − 0.474
Parotid-L Dmean 0.160 0.079 0.004 0.118 0.042 − 0.050 − 0.007 − 0.173 − 0.385
V30 Gy 0.297 0.096 − 0.115 0.158 0.017 −0.122 0.065 −0.377 − 0.403
Parotid-R Dmean −0.056 − 0.022 − 0.049 0.091 − 0.034 − 0.151 0.007 − 0.126 − 0.489
V30 Gy − 0.064 0.056 − 0.057 0.093 − 0.085 − 0.207 − 0.057 − 0.147 −0.42
TL-L D1cc 0.043 0.146 0.139 0.151 0.132 0.087 0.068 −0.096 −0.271
TL-R D1cc 0.055 0.162 0.196 0.058 0.035 0.050 0.370 −0.164 −0.241
Larynx Dmean −0.225 −0.288 − 0.243 −0.315 − 0.366 −0.363 0.079 −0.349 − 0.666
  1. The two-tailed Student t-test with SPSS statistical software (V19);
  2. Bold letters in the data highlighted R > 0.8 and * symbolled the significance of the correlation at the 0.01 level (P < 0.01, bilateral);
  3. Abbreviations: D V volumetric dose, V D dose volumes, PTV planning target volume, GP (%) gamma pass rate (%), SC spinal cord, BS brainstem, Parotid-L left parotid gland, Parotid-R right parotid gland, TL-L left temporal lobe, TL-R right temporal lobe