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Table 2 Dosimetric parameters of the treatment plans

From: Long-term results in malignant pleural mesothelioma treated with neoadjuvant chemotherapy, extrapleural pneumonectomy and intensity-modulated radiotherapy

  Step & Shoot Helical Tomotherapy All Patients
41 patients 21 patients 62 patients
Mean value ± SD Mean value ± SD Mean value ± SD
Target volume (PTV)
 Mean Dose [Gy] 52.1 ± 2.3 53.5 ± 0.5 52.6 ± 2.0
 Standard Deviation [Gy] 3.5 ± 1.5 2.4 ± 1.2 3.1 ± 1.5
 V95% [%] 85.3 ± 5.3 92.3 ± 5.2 87.6 ± 6.2
 V90% [%] 93.3 ± 3.8 94.2 ± 3.9 94.2 ± 3.9
Contralateral Lung
 Mean Lung Dose [Gy] 7.6 ± 2.2 7.0 ± 1.2 7.4 ± 2.0
 V5Gy [%] 66.2 ± 23.0 71.5 ± 18.6 67.9 ± 21.6
 V20Gy [%] 1.7 ± 1.9 0.7 ± 1.3 1.4 ± 1.8
Liver (right-sided MPM)
 Mean Dose [Gy] 21.9 ± 3.9 26.4 ± 3.8 23.4 ± 4.4
 V30Gy [%] 24.7 ± 8.3 33.5 ± 7.8 27.5 ± 9.0
Liver (left-sided MPM)
 Mean Dose [Gy] 9.1 ± 2.3 10.4 ± 1.5 9.6 ± 2.1
 V30Gy [%] 2.0 ± 2.5 2.5 ± 2.7 2.2 ± 2.5
Heart
 V45Gy [%] 7.3 ± 7.5 12.4 ± 6.1 9.0 ± 7.4
Ipsilateral kidney
 Mean Dose [Gy] 9.9 ± 5.1 9.3 ± 2.5 9.7 ± 4.4
 V15Gy [%] 23.4 ± 23.2 16.5 ± 13.0 21.0 ± 20.4
Contralateral kidney
 Mean Dose [Gy] 3.1 ± 1.6 4.5 ± 1.5 3.6 ± 1.7
 V15Gy [%] 0.1 ± 0.2 0.3 ± 0.6 0.2 ± 0.4
Spinal Cord
 Maximum Dose [Gy] 36.0 ± 5.7 37.3 ± 5.3 36.4 ± 5.5
Esophagus
 V55Gy [%] 0.9 ± 1.7 2.2 ± 2.4 1.4 ± 2.1
  1. SD standard deviation, PTV planning target volume