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Table 2 Comparison of the delivered dose to CTV and organs at risk for free breathing and breath-hold treatment techniques: convolution with the probability density functions

From: Incorporating breath holding and image guidance in the adjuvant gastric cancer radiotherapy: a dosimetric study

   CTV Liver L kidney R kidney
   V45 V42.75 V30 V15 V15
   Mean ± SD (%) Mean ± SD (%) Mean ± SD (%) Mean ± SD (%) Mean ± SD (%)
Static plan IMRTFB 99.7 ± 0.5 100.0 ± 0.1 N1* N1* N1*
IMRTIGBH 99.7 ± 0.6 100.0 ± 0.0 −5.6 ± 4.7 −6.0 ± 8.8 −5.4 ± 7.9
p value 0.96 0.76 0.01 0.09 0.09
Convoluted plan IMRTFB 99.7 ± 0.3 100.0 ± 0.1 N2* N2* N2*
  IMRTIGBH 99.8 ± 0.4 100.0 ± 0.0 −3.8 ± 5.4 −14.8 ± 9.9 −11.0 ± 7.7
  p value 0.78 0.33 0.08 <0.01 <0.01
  1. N1* for dose to the organs at risk, the free breathing plans were used as the reference in the comparison (static plan). N2* for dose to the organs at risk, the convoluted free breathing plans were used as the reference in the comparison (convolved plan).
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Radiation Oncology

ISSN: 1748-717X

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