{"created":"2023-05-15T14:47:32.979507+00:00","id":65197,"links":{},"metadata":{"_buckets":{"deposit":"d8d231b4-92fd-488a-948e-56547a20148e"},"_deposit":{"created_by":1,"id":"65197","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"65197"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00065197","sets":["10:29"]},"author_link":["642332","642330","642336","642333","642339","642335","642331","642334","642337","642338"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2013-10-19","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"【目的】我々は、以前、前立腺癌患者に使用したビームのSOBP中央深線量を、クラークソン積分に基づいた推計方法によって推計した(日本放射線腫瘍学会第25回学術大会、日本放射線技術学会第69回総会学術大会)。今回、推計に最適なサンプリング数や扇形中心角の大きさを検討した。\n【方法】前立腺癌患者に使用した224ビームについて、推計に必要とされるレンジシフター厚と円形照射野半径に伴うSOBP中央深線量の変化をサンプリングする数を変化させ、実測値と推計値を比較した。照射野：正方形、矩形、Y字、＋字、E字に対して照射野を区分する扇形の中心角の大きさを変化させ、実測値と推計値を比較した。また、区分する扇形を回転移動させ、同様に実測値と比較した。\n【結果】サンプリング数を計16点から6点としたとき、実測値と推計値の相違は平均−0.01%から平均−0.07%と僅かに増加した。扇形中心角が大きい場合、扇形を回転移動させる角度の変化に対して、推計値は大きくばらつくが、今回測定した照射野では中心角約10°でほぼ収束する。\n【考察】サンプリング数に伴う相違の変化はビームのレンジシフター厚と照射野形状に依存する。扇形中心角は10°以下が望ましい。","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４１回日本放射線技術学会秋季学術大会","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":"田尻, 稔"}],"nameIdentifiers":[{"nameIdentifier":"642330","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"前田, 貴雅"}],"nameIdentifiers":[{"nameIdentifier":"642331","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"磯部, 喜治"}],"nameIdentifiers":[{"nameIdentifier":"642332","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"谷本, 克之"}],"nameIdentifiers":[{"nameIdentifier":"642333","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"柴山, 晃一"}],"nameIdentifiers":[{"nameIdentifier":"642334","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"田尻 稔","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"642335","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"前田 貴雅","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"642336","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"磯部 喜治","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"642337","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"谷本 克之","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"642338","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"柴山 晃一","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"642339","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":"ワブラー法を使った炭素線治療におけるMU値の計算−計算誤差について−","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"ワブラー法を使った炭素線治療におけるMU値の計算−計算誤差について−"}]},"item_type_id":"10005","owner":"1","path":["29"],"pubdate":{"attribute_name":"公開日","attribute_value":"2013-10-21"},"publish_date":"2013-10-21","publish_status":"0","recid":"65197","relation_version_is_last":true,"title":["ワブラー法を使った炭素線治療におけるMU値の計算−計算誤差について−"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T21:02:53.195018+00:00"}