{"created":"2023-05-15T14:43:58.983366+00:00","id":60149,"links":{},"metadata":{"_buckets":{"deposit":"5aeef59c-22d7-476c-beb4-fbaf0c678427"},"_deposit":{"created_by":1,"id":"60149","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"60149"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00060149","sets":["10:29"]},"author_link":["598074","598077","598082","598081","598080","598072","598083","598084","598073","598079","598078","598075","598076"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2003-10-29","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"[目的]PETの断面内分解能は、視野中心から離れるほど低下する。本研究では、Ordered Subsets-Expectation Maximization(OS-EM)を用いて、視野中心から半径方向rにより異なる検出器応答関数を考慮した画像再構成法を検討した。\n[方法]視野中心から異なる距離の点線源を設定し、2Dmodeのシミュレーション結果から場所により異なる応答関数D(r)を推定した。D(r)をOS-EMに組み込む方法として、投影にD(r)を考慮したOS-EM(method-1)、投影、逆投影にD(r)を考慮したOS-EM(method-2)の2種類の方法を提案した。画像評価は、デジタルファントムのシミュレーションデータを用い、提案手法と従来法の比較を行った。\n[結果]複雑な計算や特別なハードウェアを用いずに、中心から離れた点の断面内分解能を向上させ、かつ断面内分解能の均一性を向上させることができた。","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43回日本核医学会総会","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":"山川, 恵介"}],"nameIdentifiers":[{"nameIdentifier":"598072","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"北村, 圭司"}],"nameIdentifiers":[{"nameIdentifier":"598073","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"外山, 比南子"}],"nameIdentifiers":[{"nameIdentifier":"598074","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"上村, 幸司"}],"nameIdentifiers":[{"nameIdentifier":"598075","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"羽石, 秀昭"}],"nameIdentifiers":[{"nameIdentifier":"598076","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"村山, 秀雄"}],"nameIdentifiers":[{"nameIdentifier":"598077","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"内山, 明彦"}],"nameIdentifiers":[{"nameIdentifier":"598078","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"山川 恵介","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"598079","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"北村 圭司","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"598080","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"外山 比南子","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"598081","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"上村 幸司","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"598082","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"羽石 秀昭","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"598083","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"村山 秀雄","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"598084","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":"検出器応答関数を用いたPET画像再構成法の検討","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"検出器応答関数を用いたPET画像再構成法の検討"}]},"item_type_id":"10005","owner":"1","path":["29"],"pubdate":{"attribute_name":"公開日","attribute_value":"2003-11-21"},"publish_date":"2003-11-21","publish_status":"0","recid":"60149","relation_version_is_last":true,"title":["検出器応答関数を用いたPET画像再構成法の検討"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T21:56:58.102106+00:00"}