{"created":"2023-05-15T14:47:28.574117+00:00","id":65098,"links":{},"metadata":{"_buckets":{"deposit":"e37ec7a3-f372-40be-8a83-0a15a6dcf6b6"},"_deposit":{"created_by":1,"id":"65098","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"65098"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00065098","sets":["10:29"]},"author_link":["641453","641452","641451","641455","641454"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2013-08-03","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"放射線医学総合研究所では，物理的な開放空間を持ち，放射線治療中にPET撮影が可能な世界初の開放型PET装置，OpenPETの開発を進めている．二重リング方式のOpenPET (Dual-ring OpenPET) では，開放空間を含めて画像化でき，体軸方向に広い視野を確保することが可能である．ここで，開放空間のイメージングは，斜めの投影データのみから画像再構成を行う必要があるため，低周波欠損による不完全データが問題となる．これまでに，逐次近似型の画像再構成手法を用いることで，低周波欠損を補償し，良好な画像が得られることを示しているが，今回は，その低周波欠損を埋める投影データを直接取得可能な方法として，Dual-ring OpenPETのリング間を繋ぎかつ物体を挟むような位置に，物体の幅をカバーできる大きさの検出器（ブリッジ検出器）を配置したジオメトリについて検討した．そして，計算機実験により，解析的な画像再構成手法を用いてもアーチファクトの少ない画像を得られることを示した．","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":"第32回日本医用画像工学会大会","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":"田島, 英朗"}],"nameIdentifiers":[{"nameIdentifier":"641451","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"山谷, 泰賀"}],"nameIdentifiers":[{"nameIdentifier":"641452","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"その他"}],"nameIdentifiers":[{"nameIdentifier":"641453","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"田島 英朗","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"641454","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"山谷 泰賀","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"641455","nameIdentifierScheme":"WEKO"}]}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"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":"ブリッジ検出器によるDual-Ring OpenPETの画質改善効果の検討","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"ブリッジ検出器によるDual-Ring OpenPETの画質改善効果の検討"}]},"item_type_id":"10005","owner":"1","path":["29"],"pubdate":{"attribute_name":"公開日","attribute_value":"2013-08-08"},"publish_date":"2013-08-08","publish_status":"0","recid":"65098","relation_version_is_last":true,"title":["ブリッジ検出器によるDual-Ring OpenPETの画質改善効果の検討"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T21:04:05.445445+00:00"}