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Dose escalation study with respiratory-gated carbon-ion scanning radiotherapy using a simultaneous integrated boost for pancreatic cancer: simulation with four-dimensional computed tomography.
https://repo.qst.go.jp/records/48371
https://repo.qst.go.jp/records/483716e16197a-4919-456a-89ac-2adea280a9a4
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-11-16 | |||||
タイトル | ||||||
タイトル | Dose escalation study with respiratory-gated carbon-ion scanning radiotherapy using a simultaneous integrated boost for pancreatic cancer: simulation with four-dimensional computed tomography. | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Kawashiro, Shohei
× Kawashiro, Shohei× Mori, Shinichiro× Yamada, Shigeru× Miki, Kazuhiro× Nemoto, Kenji× Tsuji, Hiroshi× Kamada, Tadashi× 川城 壮平× 森 慎一郎× 山田 滋× 三木 一弘× 根本 建二× 辻 比呂志× 鎌田 正 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | OBJECTIVE: \nPancreatic cancer is a difficult to treat disease with a persistently high mortality rate. We evaluated dose distribution simulation with respiratory-gated carbon-ion pencil beam scanning (C-PBS) with a simultaneous integrated boost (SIB) to increase tumour dose, sparing organs at risk (OARs). \nMETHODS: \nUsing four-dimensional CT data of 12 patients, we delineated gross tumour volume and two clinical target volumes (CTVs). To consider beam range intrafractional uncertainty, we calculated field-specific target volumes, from which two planning target volumes (PTVs) were generated. PTV1 would receive a planned dose of 55.2 Gy [relative biological effectiveness (RBE)-weighted absorbed dose] in 12 fractions, and PTV2 would receive an SIB dose up to 67.2 Gy (RBE). Dose assessments were conducted with regard to the targets and OARs. \nRESULTS: \nCTV2 dose covering 95% of the volume (D95%) increased from 50.3 ± 5.1 Gy (RBE) to 62.5 ± 3.5 Gy (RBE) for a planned dose from 55.2 Gy (RBE) to 67.2 Gy (RBE). For 4 of 12 patients with a distance of ≥5 mm between the tumour and the gastrointestinal tract, CTV2 D95% was ≥95% of planned dose at all dose levels. \nCONCLUSION: \nWe quantified dose escalation with respiratory-gated C-PBS using SIB for pancreatic cancer and revealed that OAR dose was not affected to the same degree as the tumour dose. Advances in knowledge: A simulation study on respiratory-gated C-PBS with SIB for pancreatic cancer was performed. The results indicated the feasibility of dose escalation for pancreatic cancer, which should be confirmed in clinical trials. |
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書誌情報 |
The British Institute of Radiology 巻 90, 号 1072, p. 20160790-1-20160790-7, 発行日 2017-04 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0007-1285 | |||||
PubMed番号 | ||||||
識別子タイプ | PMID | |||||
関連識別子 | 28181819 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1259/bjr.20160790 | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1259/bjr.20160790 | |||||
関連名称 | https://doi.org/10.1259/bjr.20160790 |