| ○種別 (必須): | □ | 学術論文 (審査論文)
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| ○言語 (必須): | □ | 英語
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| ○招待 (推奨): |
| ○審査 (推奨): | □ | Peer Review
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| ○カテゴリ (推奨): | □ | 研究
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| ○共著種別 (推奨): | □ | 国内共著 (徳島大学内研究者と国内(学外)研究者との共同研究 (国外研究者を含まない))
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| ○学究種別 (推奨): | □ | 研究生による研究報告
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| ○組織 (推奨): |
| ○著者 (必須): | 1. | 富永 正英 ([徳島大学.大学院医歯薬学研究部.保健学域.保健科学部門.放射線科学系.医用画像解析学]/[徳島大学.医学部.保健学科.放射線技術科学専攻.診療放射線技術学講座])
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| 2. | 林 裕晃
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| 3. | (英) Matsumoto Akinori (日) (読)
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| 4. | (英) Kimoto Natsumi (日) (読)
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| 5. | (英) Tohru Okazaki (日) (読)
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| 6. | (英) Takuya Hashizume (日) (読)
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| 7. | (英) Ikuo Kobayashi (日) (読)
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| ○題名 (必須): | □ | (英) Uncertainty evaluation of absorbed dose measurements by means of small-type OSL dosimeter for radiotherapeutic X-ray region (日)
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| ○要約 (任意): | □ | (英) For Quality Assurance of clinical radiation therapy, it is necessary to accurately measure multiple doses, and evaluate and compare the results to the radiation treatment system. Based on the measurements using multiple dosimeters, there is no uncertainty estimation of the delivered dose for accurate analysis. In this study, we focused attention on small-type optically stimulated luminescence (OSL) dosimeters, and clarified the relationship of uncertainties between the experimental variance associated with multiple data points and the variance predicted by Poisson distribution. The experiments were carried out as follows: fifteen dosimeters were placed in a water equivalent phantom, they were irradiated with X-rays having an acceleration voltage of 10-MV with 167.2 cGy (200 MU) and 2,090 cGy (2,500 MU). Each dosimeter was read ten times and the experimental variance and predicted variance were analyzed. As a result, we found that the experimental uncertainties were 3.9 and 6.2 times higher than predicted uncertainty when irradiated at 167.2 cGy and 2,090 cGy, respectively. We discuss the relationship of measurement uncertainties. Then, we concluded that the uncertainty of OSL dosimeters was found to be 3%. We also conclude that the OSL dosimeter can be used to measure the absorbed dose in the radiation therapy region. (日)
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| ○キーワード (推奨): | 1. | (英) OSL dosimeter (日) (読)
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| 2. | 放射線治療 (radiation therapy)
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| ○発行所 (推奨): |
| ○誌名 (必須): | □ | 医用画像情報学会雑誌 (医用画像情報学会)
(pISSN: 0910-1543, eISSN: 1880-4977)
| ○ISSN (任意): | □ | 1880-4977
ISSN: 0910-1543
(pISSN: 0910-1543, eISSN: 1880-4977) Title: 医用画像情報学会雑誌Supplier: 医用画像情報学会 (医中誌Web)
(J-STAGE)
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| ○巻 (必須): | □ | 33
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| ○号 (必須): | □ | 2
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| ○頁 (必須): | □ | 32 37
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| ○年月日 (必須): | □ | 西暦 2016年 7月 初日 (平成 28年 7月 初日)
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| ○DOI (任意): | □ | 10.11318/mii.33.32 (→Scopusで検索)
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