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  1. C100 医学部/医学系研究科
  2. C100a 雑誌掲載論文
  3. 学術雑誌

Characterization of stochastic noise and post-irradiation density growth for reflective-type radiochromic film in therapeutic photon beam dosimetry

http://hdl.handle.net/2237/25708
http://hdl.handle.net/2237/25708
a09b59eb-99a4-498c-bc08-e7b05cc3213c
名前 / ファイル ライセンス アクション
Fig6.pdf Fig6.pdf ファイル公開:2017/10/01 (209.9 kB)
Fig5.pdf Fig5.pdf ファイル公開:2017/10/01 (170.3 kB)
Fig4.pdf Fig4.pdf ファイル公開:2017/10/01 (125.2 kB)
Fig3.pdf Fig3.pdf ファイル公開:2017/10/01 (110.7 kB)
Fig2.pdf Fig2.pdf ファイル公開:2017/10/01 (123.5 kB)
Fig1.pdf Fig1.pdf ファイル公開:2017/10/01 (73.4 kB)
Clean_manuscript-3rd.pdf Clean_manuscript-3rd.pdf ファイル公開:2017/10/01 (338.2 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2017-03-15
タイトル
タイトル Characterization of stochastic noise and post-irradiation density growth for reflective-type radiochromic film in therapeutic photon beam dosimetry
言語 en
著者 Kamomae, Takeshi

× Kamomae, Takeshi

WEKO 69752

en Kamomae, Takeshi

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Oita, Masataka

× Oita, Masataka

WEKO 69753

en Oita, Masataka

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Hayashi, Naoki

× Hayashi, Naoki

WEKO 69754

en Hayashi, Naoki

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Sasaki, Motoharu

× Sasaki, Motoharu

WEKO 69755

en Sasaki, Motoharu

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Aoyama, Hideki

× Aoyama, Hideki

WEKO 69756

en Aoyama, Hideki

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Oguchi, Hiroshi

× Oguchi, Hiroshi

WEKO 69757

en Oguchi, Hiroshi

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Kawamura, Mariko

× Kawamura, Mariko

WEKO 69758

en Kawamura, Mariko

Search repository
Monzen, Hajime

× Monzen, Hajime

WEKO 69759

en Monzen, Hajime

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Itoh, Yoshiyuki

× Itoh, Yoshiyuki

WEKO 69760

en Itoh, Yoshiyuki

Search repository
Naganawa, Shinji

× Naganawa, Shinji

WEKO 69761

en Naganawa, Shinji

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 en
権利情報 © 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
キーワード
主題Scheme Other
主題 Radiochromic film
キーワード
主題Scheme Other
主題 Stochastic noise
キーワード
主題Scheme Other
主題 Post-irradiation density growth
キーワード
主題Scheme Other
主題 Dosimetric uncertainty
抄録
内容記述 The aim of this study is to investigate the dosimetric uncertainty of stochastic noise and the post-irradiation density growth for reflective-type radiochromic film to obtain the appropriate dose from the exactly controlled film density. Film pieces were irradiated with 6-MV photon beams ranging from 0 to 400 cGy. The pixel values (PVs) of these films were obtained using a flatbed scanner at elapsed times of 1 min to 120 h between the end of irradiation and the film scan. The means and standard deviations (SDs) of the PVs were calculated. The SDs of the converted dose scale, usd, and the dose increases resulting from the PV increases per ±29 min at each elapsed time, utime, were computed. The combined dose uncertainties from these two factors, uc, were then calculated. A sharp increase in the PV occurred within the first 3 h after irradiation, and a slight increase continued from 3 h to 120 h. usd was independent of post-irradiation elapsed time. Sharp decreases in utime were obtained within 1 h after irradiation, and slight decreases in utime were observed from 1 to 24 h after irradiation. uc first decreased 1 h after irradiation and remained constant afterward. Assuming that the post-irradiation elapsed times of all of the related measurements are synchronized within ±29 min, the elapsed time should be at least 1 h in our system. It is important to optimize the scanning protocol for each institution with consideration of the required measurement uncertainty and acceptable latency time.
言語 en
内容記述タイプ Abstract
出版者
言語 en
出版者 Elsevier
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ AM
出版タイプResource http://purl.org/coar/version/c_ab4af688f83e57aa
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1016/j.ejmp.2016.07.091
ISSN
収録物識別子タイプ PISSN
収録物識別子 1120-1797
書誌情報 en : Physica Medica

巻 32, 号 10, p. 1314-1320, 発行日 2016-10
著者版フラグ
値 author
URI
識別子 http://dx.doi.org/10.1016/j.ejmp.2016.07.091
識別子タイプ DOI
URI
識別子 http://hdl.handle.net/2237/25708
識別子タイプ HDL
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