@misc{oai:repo.qst.go.jp:00066278,
 author = {兼松, 伸幸 and 森, 慎一郎 and 稲庭, 拓 and 兼松 伸幸 and 森 慎一郎 and 稲庭 拓},
 month = {Apr},
 note = {[Purpose] A new calibration method for CT number to stopping-power ratio conversion was recently proposed as a revision of the method that has been used in many particle-radiotherapy centers. We report in this presentation how we actually implemented the revision for the first time in clinical practice.
[Methods] We followed the publication by Kanematsu et al in Phys. Medi. Biol. 61 (2016) 5037-5050 for carbon ions of effective energy 131 MeV/nucleon proposed by Inaniwa et al in Phys. Med. Biol. 61 (2016) N542-N550 to determine CT numbers and stopping-power ratios of 11 representative tissues for the conversion function of each clinical CT-scanning condition. We analyzed the range variation due to the revision for sampled treatment plans. 
[Results] The revision of the conversion caused marginal effect on the range calculation.
[Conclusion] The transition to the revised method was straightforward and would marginally improve the range accuracy in clinical practice., 第113回日本医学物理学会学術大会},
 title = {粒子線治療計画におけるCT値から阻止能比への変換関係の構築方法の更新},
 year = {2017}
}