{"created":"2023-05-15T14:36:54.530577+00:00","id":47558,"links":{},"metadata":{"_buckets":{"deposit":"621fc4e5-e4f5-432f-a84e-4c0c3135eb2f"},"_deposit":{"created_by":1,"id":"47558","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"47558"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00047558","sets":["1"]},"author_link":["476683","476690","476682","476688","476691","476692","476684","476693","476689","476687","476686","476685"],"item_8_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2016-07","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"13","bibliographicPageEnd":"4889","bibliographicPageStart":"4870","bibliographicVolumeNumber":"61","bibliographic_titles":[{"bibliographic_title":"Physics in medicine and biology"}]}]},"item_8_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"The accumulation of induced radioactivity within in-beam PET scanner\nscintillators is of concern for its long-term clinical usage in particle therapy.\nTo estimate the effects on OpenPET which we are developing for in-beam PET\nbased on GSOZ (Zi doped Gd2SiO5), we measured the induced radioactivity\nof GSO activated by secondary fragments in a water phantom irradiation by a\n12C beam with an energy of 290 MeV u−1. Radioisotopes of Na, Ce, Eu, Gd,\nNd, Pm and Tb including positron emitters were observed in the gamma ray\nspectra of the activated GSO with a high purity Ge detector and their absolute\nradioactivities were calculated. We used the Monte Carlo simulation platform,\nGeant4 in which the observed radioactivity was assigned to the scintillators\nof a precisely reproduced OpenPET and the single and coincidence rates\nimmediately after one treatment and after one-year usage were estimated for\nthe most severe conditions. Comparing the highest coincidence rate originating\nfrom the activated scintillators (background) and the expected coincidence\nrate from an imaging object (signal), we determined the expected signal-tonoise\nratio to be more than 7 within 3 min and more than 10 within 1 min from\nthe scan start time. We concluded the effects of scintillator activation and their\naccumulation on the OpenPET imaging were small and clinical long-term\nusage of the OpenPET was feasible.\nKeywords: in-beam PET, GSO scintillator, particle therapy, openPET,\ninduced radioactivity, secondary fragments\n(Some figures may appear in colour only in the online journal)","subitem_description_type":"Abstract"}]},"item_8_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"IOPscience "}]},"item_8_relation_13":{"attribute_name":"PubMed番号","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"27280308","subitem_relation_type_select":"PMID"}}]},"item_8_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1088/0031-9155/61/13/4870","subitem_relation_type_select":"DOI"}}]},"item_8_relation_17":{"attribute_name":"関連サイト","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_text":"http://iopscience.iop.org/article/10.1088/0031-9155/61/13/4870"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"http://iopscience.iop.org/article/10.1088/0031-9155/61/13/4870","subitem_relation_type_select":"URI"}}]},"item_8_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0031-9155","subitem_source_identifier_type":"ISSN"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_14cb"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Hirano, Yoshiyuki"}],"nameIdentifiers":[{"nameIdentifier":"476682","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Nitta, Munetaka"}],"nameIdentifiers":[{"nameIdentifier":"476683","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Nishikido, Fumihiko"}],"nameIdentifiers":[{"nameIdentifier":"476684","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Yoshida, Eiji"}],"nameIdentifiers":[{"nameIdentifier":"476685","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Inadama, Naoko"}],"nameIdentifiers":[{"nameIdentifier":"476686","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Yamaya, Taiga"}],"nameIdentifiers":[{"nameIdentifier":"476687","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"平野 祥之","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"476688","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"新田 宗孝","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"476689","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"錦戸 文彦","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"476690","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"吉田 英治","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"476691","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"稲玉 直子","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"476692","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"山谷 泰賀","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"476693","nameIdentifierScheme":"WEKO"}]}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Induced radioactivity of a GSO scintillator by secondary fragments in carbon ion therapy and its effects on in-beam OpenPET imaging","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Induced radioactivity of a GSO scintillator by secondary fragments in carbon ion therapy and its effects on in-beam OpenPET imaging"}]},"item_type_id":"8","owner":"1","path":["1"],"pubdate":{"attribute_name":"公開日","attribute_value":"2016-10-05"},"publish_date":"2016-10-05","publish_status":"0","recid":"47558","relation_version_is_last":true,"title":["Induced radioactivity of a GSO scintillator by secondary fragments in carbon ion therapy and its effects on in-beam OpenPET imaging"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T23:38:21.763567+00:00"}