{"created":"2023-05-15T14:36:47.357124+00:00","id":47399,"links":{},"metadata":{"_buckets":{"deposit":"30f52164-8109-4740-b0a7-0758b74fa30b"},"_deposit":{"created_by":1,"id":"47399","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"47399"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00047399","sets":["1"]},"author_link":["474569","474574","474565","474579","474572","474568","474567","474575","474590","474587","474566","474577","474585","474580","474582","474570","474581","474583","474573","474586","474589","474571","474588","474578","474584","474576"],"item_8_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2016-02","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"4","bibliographicPageEnd":"1809","bibliographicPageStart":"1795","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 single-ring OpenPET (SROP), for which the detector arrangement has a cylinder shape cut by two parallel planes at a slant angle to form an open space, is our original proposal for in-beam PET. In this study, we developed a small prototype of an axial-shift type SROP (AS-SROP) with a novel transformable architecture for a proof-of-concept. In the AS-SROP, detectors originally forming a cylindrical PET are axially shifted little by little. We designed the small AS-SROP prototype for 4-layer depth-of-interaction detectors arranged in a ring diameter of 250 mm. The prototype had two modes: open and closed. The open mode formed the SROP with the open space of 139 mm and the closed mode formed a conventional cylindrical PET. The detectors were simultaneously moved by a rotation handle allowing them to be transformed between the two modes. We evaluated the basic performance of the developed prototype and carried out in-beam imaging tests in the HIMAC using 11C radioactive beam irradiation. As a result, we found the open mode enabled in-beam PET imaging at a slight cost of imaging performance; the spatial resolution and sensitivity were 2.6 mm and 5.1% for the open mode and 2.1 mm and 7.3% for the closed mode. We concluded that the AS-SROP can minimize the decrease of resolution and sensitivity, for example, by transforming into the closed mode immediately after the irradiation while maintaining the open space only for the in-beam PET measurement.","subitem_description_type":"Abstract"}]},"item_8_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"IOP 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Taiga"}],"nameIdentifiers":[{"nameIdentifier":"474577","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"田島 英朗","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"474578","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"吉田 英治","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"474579","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"稲玉 直子","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"474580","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"錦戸 文彦","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"474581","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"中島 靖紀","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"474582","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"脇坂 秀克","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"474583","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"品地 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architecture"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T23:40:19.256570+00:00"}