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Table 4 Radiation therapy dosimetric data and the relationship of oesophageal dose with grade of acute oesophagitis

From: Association of oesophageal radiation dose volume metrics, neutropenia and acute radiation oesophagitis in patients receiving chemoradiotherapy for non-small cell lung cancer

  All patients (n = 54) Only patients receiving pre-specified dose to the oesophagus
Variable Mean sd Spearman correlation p-value n Spearman correlation p-value
Dmax (Gy) 50.2 18.0 0.143 0.302 - - -
Dmean (Gy) 20.8 10.8 0.269 0.049 - - -
VO20 43.9 23.1 0.306 0.024 51 0.355 0.011
VO25 40.8 22.1 0.297 0.029 50 0.303 0.033
VO30 34.8 23 0.238 0.083 49 0.269 0.062
VO35 30.8 24.4 0.201 0.146 43 0.337 0.027
VO40 26.9 23.9 0.162 0.243 41 0.302 0.055
VO45 23.8 23 0.163 0.24 38 0.310 0.058
VO50 21.1 21.1 0.152 0.273 38 0.289 0.078
VO55 17.1 19.1 0.124 0.371 37 0.290 0.081
VO60 6.9 10.9 0.104 0.455 25 0.591 0.002
LPO20 48.9 21 0.205 0.136 51 0.240 0.090
LPO30 42.2 21.4 0.134 0.336 50 0.107 0.458
LPO40 34.2 24.7 0.106 0.448 41 0.206 0.196
LPO50 29.9 24 0.101 0.469 38 0.189 0.255
LPO60 12.5 16.1 0.048 0.728 27 0.428 0.026
LWO20 29.8 22.7 0.319 0.019 43 0.185 0.236
LWO30 20.5 20.4 0.250 0.068 36 0.148 0.389
LWO40 14.4 18.6 0.231 0.093 30 0.248 0.186
LWO50 8.6 14.1 0.210 0.128 20 0.214 0.364
LWO60 1 3.8 0.139 0.316 6 0.147 0.781
  1. VOx Percentage volume of oesophagus receiving x dose (%), LPOx Percentage length of partial oesophagus receiving x dose (%), LWOx Percentage length of whole oesophagus receiving x dose (%). Values in bold type indicate statistical significance, p < 0.05