دورية أكاديمية
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Precision imaging of 4.4 MeV gamma rays using a 3-D position sensitive Compton camera.

التفاصيل البيبلوغرافية
العنوان: Precision imaging of 4.4 MeV gamma rays using a 3-D position sensitive Compton camera.
المؤلفون: Koide A; Waseda University, Graduate School of Advanced Science and Engineering, Tokyo, Japan., Kataoka J; Waseda University, Graduate School of Advanced Science and Engineering, Tokyo, Japan. kataoka.jun@waseda.jp., Masuda T; Waseda University, Graduate School of Advanced Science and Engineering, Tokyo, Japan., Mochizuki S; Waseda University, Graduate School of Advanced Science and Engineering, Tokyo, Japan., Taya T; Waseda University, Graduate School of Advanced Science and Engineering, Tokyo, Japan., Sueoka K; Waseda University, Graduate School of Advanced Science and Engineering, Tokyo, Japan., Tagawa L; Waseda University, Graduate School of Advanced Science and Engineering, Tokyo, Japan., Fujieda K; Waseda University, Graduate School of Advanced Science and Engineering, Tokyo, Japan., Maruhashi T; Waseda University, Graduate School of Advanced Science and Engineering, Tokyo, Japan., Kurihara T; Waseda University, Graduate School of Advanced Science and Engineering, Tokyo, Japan., Inaniwa T; National Institute of Radiological Sciences, QST, Department of Accelerator and Medical Physics, Chiba, Japan.
المصدر: Scientific reports [Sci Rep] 2018 May 25; Vol. 8 (1), pp. 8116. Date of Electronic Publication: 2018 May 25.
نوع المنشور: Journal Article; Research Support, Non-U.S. Gov't
اللغة: English
بيانات الدورية: Publisher: Nature Publishing Group Country of Publication: England NLM ID: 101563288 Publication Model: Electronic Cited Medium: Internet ISSN: 2045-2322 (Electronic) Linking ISSN: 20452322 NLM ISO Abbreviation: Sci Rep Subsets: PubMed not MEDLINE; MEDLINE
أسماء مطبوعة: Original Publication: London : Nature Publishing Group, copyright 2011-
مستخلص: Imaging of nuclear gamma-ray lines in the 1-10 MeV range is far from being established in both medical and physical applications. In proton therapy, 4.4 MeV gamma rays are emitted from the excited nucleus of either 12 C* or 11 B* and are considered good indicators of dose delivery and/or range verification. Further, in gamma-ray astronomy, 4.4 MeV gamma rays are produced by cosmic ray interactions in the interstellar medium, and can thus be used to probe nucleothynthesis in the universe. In this paper, we present a high-precision image of 4.4 MeV gamma rays taken by newly developed 3-D position sensitive Compton camera (3D-PSCC). To mimic the situation in proton therapy, we first irradiated water, PMMA and Ca(OH)2 with a 70 MeV proton beam, then we identified various nuclear lines with the HPGe detector. The 4.4 MeV gamma rays constitute a broad peak, including single and double escape peaks. Thus, by setting an energy window of 3D-PSCC from 3 to 5 MeV, we show that a gamma ray image sharply concentrates near the Bragg peak, as expected from the minimum energy threshold and sharp peak profile in the cross section of 12 C(p,p) 12 C*.
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تواريخ الأحداث: Date Created: 20180527 Date Completed: 20190919 Latest Revision: 20190919
رمز التحديث: 20240628
مُعرف محوري في PubMed: PMC5970135
DOI: 10.1038/s41598-018-26591-2
PMID: 29802312
قاعدة البيانات: MEDLINE
الوصف
تدمد:2045-2322
DOI:10.1038/s41598-018-26591-2