{"created":"2023-05-15T14:47:04.888410+00:00","id":64566,"links":{},"metadata":{"_buckets":{"deposit":"9097839c-343b-47d2-bbfa-d78af8bfff5d"},"_deposit":{"created_by":1,"id":"64566","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"64566"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00064566","sets":["10:29"]},"author_link":["636361","636352","636356","636357","636355","636360","636362","636363","636365","636367","636369","636370","636354","636353","636364","636371","636366","636359","636358","636368"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2012-04-15","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"「背景・目的」我々は、世界初の開放型PET装置「OpenPET」のアイディアを2008年に提案し、粒子線治療における照射野イメージングや、直接的な腫瘍トラッキングの実現を目指している。これまでに、小型OpenPET試作機を開発し、C-11ビームによる照射野イメージングをファントム実験にて実証した(Yamaya PMB2011)。照射中＋照射後のPET計測により、従来のオートアクティベーションでは実現不可能であった、一次粒子自体の3次元分布の画像化が可能であることが示されたが、washout影響を抑えるためには照射後PET計測を極力短くする必要がある。よって本研究では、照射中のPET計測のみからの照射野イメージングの実現可能性を明らかにする。\n「方法」半減期1224秒のC-11と比べて、約64倍の高い被放射能を持つ半減期19秒のC-10に注目した。そして、重粒子線がん治療装置HIMACにて、小型OpenPET試作機を用いて、C-12、C-11およびC-10ビームを比較する照射実験を行った。具体的には、PMMAファントム（4cm角）照射にてOpenPETイメージング性能を検証した後、ラット照射によりwashout影響を評価した。\n「結果・考察」C-10照射により、照射中のPET計測（約3Gy照射）のみからでも、3mmのレンジの差が画像化できることが示された。また、ラット実験により、照射中PET計測がwashout影響の低減に有効であることが示された。\n「結論」小型OpenPET試作機とC-10ビーム照射により、washout影響を抑えた即時照射野イメージングが可能であることを実証した。","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103回日本医学物理学会学術大会","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":"山谷, 泰賀"}],"nameIdentifiers":[{"nameIdentifier":"636352","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"吉田, 英治"}],"nameIdentifiers":[{"nameIdentifier":"636353","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"脇坂, 秀克"}],"nameIdentifiers":[{"nameIdentifier":"636354","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"辻, 厚至"}],"nameIdentifiers":[{"nameIdentifier":"636355","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"田島, 英朗"}],"nameIdentifiers":[{"nameIdentifier":"636356","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"錦戸, 文彦"}],"nameIdentifiers":[{"nameIdentifier":"636357","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"木内, 尚子"}],"nameIdentifiers":[{"nameIdentifier":"636358","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"中島, 靖紀"}],"nameIdentifiers":[{"nameIdentifier":"636359","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"佐藤, 眞二"}],"nameIdentifiers":[{"nameIdentifier":"636360","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"稲庭, 拓"}],"nameIdentifiers":[{"nameIdentifier":"636361","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"山谷 泰賀","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"636362","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"吉田 英治","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"636363","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"脇坂 秀克","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"636364","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"辻 厚至","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"636365","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"田島 英朗","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"636366","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"錦戸 文彦","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"636367","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"木内 尚子","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"636368","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"中島 靖紀","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"636369","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"佐藤 眞二","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"636370","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"稲庭 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