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Intrafractional Respiratory Motion for Charged Particle Lung Therapy with Immobilization Assessed by Four-Dimensional Computed Tomography
https://repo.qst.go.jp/records/48431
https://repo.qst.go.jp/records/4843199ec731d-c8a0-43ab-869c-5683853eefcd
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2018-01-11 | |||||
| タイトル | ||||||
| タイトル | Intrafractional Respiratory Motion for Charged Particle Lung Therapy with Immobilization Assessed by 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 |
Dobashi, Suguru
× Dobashi, Suguru× Sugane, Toshio× Mori, Shinichiro× Asakura, Hiroshi× Yamamoto, Naoyoshi× Kumagai, Motoki× Kandatsu, Susumu× Baba, Masayuki× 土橋 卓× 須金 紀雄× 森 慎一郎× 浅倉 裕史× 山本 直敬× 熊谷 始紀× 神立 進× 馬場 雅行 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The aim of this study was to quantify the magnitude of intrafractional lung tumor motion under free-breathing conditions with an immobilization device using four-dimensional computed tomography (4DCT). 4DCT data sets were acquired for 17 patients with lung tumors receiving carbon ion beam therapy. A single respiratory cycle was subdivided into 10 phases, and intrafractional tumor motion was calculated by identifying the gross tumor volume (GTV) center of mass (COM) in two scenarios; respiratory-ungated and -gated treatments, which were based on a whole respiratory cycle and a 30% duty cycle around peak exhalation, respectively. For the respiratory-ungated case, the mean (± standard deviation) GTV-COM dis-placements from the peak exhalation position over the 17 patients were 0.6 (± 0.8) / 0.9 (± 1.2) mm, 2.0 (± 1.4) / 0.4 (± 0.7) mm, and 0.2 (± 0.5) / 7.8 (± 6.9) mm in left/right, anterior/posterior and superior/infe-rior directions, respectively, while these were reduced for the respiratory-gated case to 0.3 (± 0.4) / 0.4 (±0.6) mm (left/right), 0.8 (± 0.7) / 0.3 (± 0.5) mm (anterior/posterior), and 0.1 (± 0.2) / 2.8 (± 2.9) mm (superior/inferior). Quantitative analysis of tumor motion with immobilization is valuable not only for par-ticle beam therapy but also for photon beam therapy. | |||||
| 書誌情報 |
Journal of Radiation Research 巻 52, 号 1, p. 59-68, 発行日 2011-03 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0449-3060 | |||||
