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Table 2 Volumes of OAR receiving doses greater than 0.1 Gy and 4 Gy which are doses considered to be relevant for induction of secondary cancers.

From: Can the risk of secondary cancer induction after breast conserving therapy be reduced using intraoperative radiotherapy (IORT) with low-energy x-rays?

  IORT APBI EBRT
  %Vol > 0.1 Gy %Vol > 4 Gy %Vol > 0.1 Gy %Vol > 4 Gy %Vol > 0.1 Gy %Vol > 4 Gy
Ipsilateral Breast 84.5 18.1 88.2 54.4 99.9 99.9
Contralateral breast < 1 0 < 1 0 97.7 1.3
Ipsilateral Lung 4.5 0 5.0 1.3 98.8 10.1
Contralateral lung < 1 0 < 1 0 87 0
Heart 1.8 0 4.2 0 98 0
Spine < 1 0 < 1 0 92 0