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Table 2 A comparison of patient characteristics and radiation pneumonitis in lung cancer patients treated with tomotherapy according to the delivery mode of radiation beams

From: Risk of radiation-induced pneumonitis after helical and static-port tomotherapy in lung cancer patients and experimental rats

   Mode of tomotherapy P-value
Static Helical
Smoking History Yes 12/12 (83.3 %) 26/51 (51.0 %) 0.04
  No 2/12 (16.7 %) 25/51 (49.0 %)  
PTV (cc) Median (range) 158.50 (57–799) 144.00 (16–789) NS
Total lung V10 (%) median (range) 32.00 (11–70) 44.00 (5–98) NS
Total lung V20 (%) median (range) 16.00 (5–51) 16.00 (4–53) NS
CCRTx Yes 7/12 (58.3 %) 14/51 (27.5 %) 0.04
  No 5/12 (41.7 %) 37/51 (72.5 %)  
Radiation pneumonitis scoring system    
 RTOG Acute 3/ 12 (25.0 %) 15/51 (29.4 %) NS
  Late 1/ 12 (8.3 %) 27/42 (64.3 %) 0.001
 CTCAE Acute 3/ 12 (25.0 %) 20/51 (39.2 %) NS
  Late 1/ 12 (8.3 %) 20/42 (47.6 %) 0.01
  1. CCRTx concurrent chemoradiotherapy, RTOG Radiation Therapy Oncology Group, CTCAE the National Cancer Institute Common Terminology Criteria for Adverse Events, version 3.0, NS not significant