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Table 1 Hemithoracic irradiation: plan characteristics for Reg 2.5, Reg 5.0 (“regular” delivery with a 2.5 cm and 5.0 cm field width) and DJDC 5.0 (dynamic jaw/dynamic couch delivery with a 5.0 cm maximum field width)

From: Accelerated large volume irradiation with dynamic Jaw/Dynamic Couch Helical Tomotherapy

   Reg 2.5 Reg 5.0 DJDC 5.0
PTV D99 (Gy) 48.6 ± 0.6 49.5 ± 1.0 48.7 ± 0.6
  D1 (Gy) 56.0 ± 0.5 57.7 ± 1.3 55.9 ± 0.2
  CI95 1.14 ± 0.08 1.19 ± 0.06 1.16 ± 0.05
  UI 1.06 ± 0.03 1.09 ± 0.04 1.06 ± 0.00
  TV95% 0.967 ± 0.015 0.975 ± 0.009 0.967 ± 0.004
liver mean (Gy) 20.1 ± 9.1 20.7 ± 9.4 19.9 ± 10.1
ipsilateral kidney mean (Gy) 8.8 ± 3.0 8.3 ± 2.9 8.4 ± 2.6
contralateral kidney mean (Gy) 4.0 ± 1.2 3.6 ± 0.9 3.3 ± 1.2
contralateral lung mean (Gy) 6.1 ± 0.6 6.2 ± 0.7 6.0 ± 1.0
spinal cord max (Gy) 35.0 ± 6.2 32.3 ± 0.9 34.1 ± 2.1
heart mean (Gy) 26.5 ± 4.8 26.9 ± 6.9 26.7 ± 5.3
esophagus mean (Gy) 32.0 ± 3.2 32.5 ± 1.2 31.5 ± 3.1
integral dose (Gy x l) 411.4 ± 24.5 513 ± 110.9 414.6 ± 31.3
  1. No statistically significant differences could be detected in dose distribution in the PTV and sparing of organs at risk.