{"created":"2023-05-15T14:46:51.070020+00:00","id":64276,"links":{},"metadata":{"_buckets":{"deposit":"fccea8fe-4910-45fd-b2e3-b60328af00c6"},"_deposit":{"created_by":1,"id":"64276","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"64276"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00064276","sets":["10:29"]},"author_link":["633885","633884","633877","633876","633879","633890","633881","633878","633870","633886","633883","633891","633872","633887","633882","633880","633874","633871","633873","633889","633875","633888"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2011-07-23","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"放射線治療後の二次がんリスク、特に小児がん治療後のそれには重大な関心が寄せられている。疫学調査結果は乳腺が放射線発がんに感受性の高い臓器であることを示しているが、小児の重粒子線照射に伴う乳がんリスクについてはほとんどわかっていない。 Sprague-Dawley（Jcl:SD）雌ラットをCs-137ガンマ線または炭素イオン線monoビーム（290 MeV/u、LET ~13 keV/μm）で、胎児期から成体期のさまざまな時期に全身照射（1Gy）した。新生児期、幼若期、若齢成体期（1, 3, 7週齢）の同ラットを0.2.〜2Gyでガンマ線または炭素イオン線で全身照射した。両実験においてラットは90週齢まで観察し、乳がんの発生割合を解析した。その結果、乳がんの発生割合は、ガンマ線または炭素イオン線1Gyを1〜7週齢で照射したラットの群において増加し、胎児期の照射によってはどちらの放射線でも増加しなかった。線量効果関係は2Gyで不規則性を示したが、これは卵胞の損傷による発情周期の早期終了によるものと考えられた。1Gy以下のガンマ線の線量効果関係は1〜7週齢照射群で類似していた。炭素イオン線の影響は照射時年齢が高いほど大きく、生物学的効果比は2未満であった。","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":"京都大学原子炉実験所専門研究会","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":"今岡, 達彦"}],"nameIdentifiers":[{"nameIdentifier":"633870","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"臺野, 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