{"created":"2023-05-15T14:49:15.160378+00:00","id":67455,"links":{},"metadata":{"_buckets":{"deposit":"8864cdb5-d65b-4890-ab01-a1f204069396"},"_deposit":{"created_by":1,"id":"67455","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"67455"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00067455","sets":["10:28"]},"author_link":["663074","663085","663075","663078","663077","663081","663073","663084","663071","663076","663082","663086","663069","663079","663080","663083","663072","663070"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2003-08-29","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"The electron density is one of the most important element for the\ntreatment planning in the radiotherapy, because this information is\nused for the range estimation of the heavy-ion beam. Although the\nelectron density has been converted from CT number obtained by\nconventional x-ray computed tomography(CT) at present, it is not\nenough for the more detailed planning due to uncertainties that arise\nfrom the beam hardening effect and the conversion process. In order to\ntake more accurate electron density, we have developed the dual-energy\nx-ray CT system using the synchrotron radiation. The dual-energy x-ray\nCT has no influence of the beam hardening because of scanning using\nmonochromatic x-rays. The experiments were carried out using two\nmonochromatic x-rays at the monochromatic beam-lines in KEK-AR and\nSPring-8. As the result, it was succeeded that the electron densities\nby the dual-energy x-ray CT were agreement with the theoretical values\nwith the accuracy less than 1% for some materials. In addition, as the\napplication for more practical use in diagnostics, the CT using the\nmixture of main and harmonics x-rays produced by the monochromator has\nbeen investigated. From the preliminary experiments, it was found that\nthe accuracy was as same as that by dual-energy x-ray CT. We will\ndescribe the dual-energy x-ray CT system and discuss the\nquantitativity and the image characteristic for this system.","subitem_description_type":"Abstract"}]},"item_10005_description_6":{"attribute_name":"会議概要（会議名, 開催地, 会期, 主催者等）","attribute_value_mlt":[{"subitem_description":"Eighth International Conference on Synchrotron Radiation Instrumentation","subitem_description_type":"Other"}]},"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":"Tsunoo, Takanori"}],"nameIdentifiers":[{"nameIdentifier":"663069","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Torikoshi, Masami"}],"nameIdentifiers":[{"nameIdentifier":"663070","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Endo, Masahiro"}],"nameIdentifiers":[{"nameIdentifier":"663071","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Natsuhori, Masahiro"}],"nameIdentifiers":[{"nameIdentifier":"663072","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kakizaki, Takehiko"}],"nameIdentifiers":[{"nameIdentifier":"663073","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Yamada, Naoaki"}],"nameIdentifiers":[{"nameIdentifier":"663074","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ito, Nobuhiko"}],"nameIdentifiers":[{"nameIdentifier":"663075","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Uesugi, Kentaro"}],"nameIdentifiers":[{"nameIdentifier":"663076","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Yagi, Naoto"}],"nameIdentifiers":[{"nameIdentifier":"663077","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Hyoudou, Kazuyuki"}],"nameIdentifiers":[{"nameIdentifier":"663078","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"角尾 卓紀","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"663079","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"取越 正己","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"663080","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"遠藤 真広","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"663081","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"夏堀 雅宏","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"663082","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"柿崎 竹彦","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"663083","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"山田 直明","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"663084","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"伊藤 伸彦","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"663085","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"兵藤 一行","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"663086","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":"conference object","resourceuri":"http://purl.org/coar/resource_type/c_c94f"}]},"item_title":"Study on Dual-Energy X-ray Computed Tomography using Synchrotron Radiation","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Study on Dual-Energy X-ray Computed Tomography using Synchrotron Radiation"}]},"item_type_id":"10005","owner":"1","path":["28"],"pubdate":{"attribute_name":"公開日","attribute_value":"2003-09-01"},"publish_date":"2003-09-01","publish_status":"0","recid":"67455","relation_version_is_last":true,"title":["Study on Dual-Energy X-ray Computed Tomography using Synchrotron Radiation"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T20:37:32.173125+00:00"}