{"created":"2023-05-15T14:46:28.992063+00:00","id":63786,"links":{},"metadata":{"_buckets":{"deposit":"44707603-7845-4391-b838-7bb84a8748e7"},"_deposit":{"created_by":1,"id":"63786","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"63786"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00063786","sets":["10:29"]},"author_link":["629404","629402","629408","629405","629407","629406","629401","629403"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2010-01-29","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"PETにて経時的に撮像した画像から得られる時間放射能曲線(tTAC : tissue Time Activity Curve)にLogan Graphical Analysis (LGA)やMulti-linear Analysis 1 (MA1)などのグラフ解析法を適用することで、神経受容体濃度を反映した全分布体積(VT : Total distribution Volume)を推定できる。しかし、LGA・MA1では、組織内の放射能濃度が平衡に達した時刻(t*)以降でのみアルゴリズムが適用可能となることから、適切なt*の指定が必要である。従来は、関心領域単位でのtTACに対してLGAを適用して得た推定VT値が一定となるt*を全画素共通のt*としていた。しかし、雑音の大きい画素では、測定点の減少に伴い推定VT値の偏差やばらつきが次第に大きくなるため、従来同様のt*決定は不適切であり、tTACのS/N比に即したt*の決定が必要である。そこで本研究では、劣悪なS/N比の下でも画素毎にt*を決定する方法としてχ2検定を用いた手法を提案し、VTの推定精度改善を試みた。その結果、tTACのS/N比に従うt*は算出できたものの、VTの推定精度とは直結せず、さらなる改良が必要であることが示唆された。","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":"医用画像研究会","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":"大柿, 宏人"}],"nameIdentifiers":[{"nameIdentifier":"629401","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"坂口, 和也"}],"nameIdentifiers":[{"nameIdentifier":"629402","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"菅, 幹生"}],"nameIdentifiers":[{"nameIdentifier":"629403","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"木村, 裕一"}],"nameIdentifiers":[{"nameIdentifier":"629404","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"大柿 宏人","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"629405","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"坂口 和也","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"629406","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"菅 幹生","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"629407","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"木村 裕一","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"629408","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":"PET受容体イメージングにおけるχ2検定によるグラフ解析法開始時刻の決定","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"PET受容体イメージングにおけるχ2検定によるグラフ解析法開始時刻の決定"}]},"item_type_id":"10005","owner":"1","path":["29"],"pubdate":{"attribute_name":"公開日","attribute_value":"2010-02-12"},"publish_date":"2010-02-12","publish_status":"0","recid":"63786","relation_version_is_last":true,"title":["PET受容体イメージングにおけるχ2検定によるグラフ解析法開始時刻の決定"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T21:19:00.844098+00:00"}