{"created":"2023-05-15T14:36:25.263914+00:00","id":46897,"links":{},"metadata":{"_buckets":{"deposit":"fac9d6c5-edb3-4b0f-b87b-b1666c9900e3"},"_deposit":{"created_by":1,"id":"46897","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"46897"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00046897","sets":["1"]},"author_link":["467988","467986","467989","467985","467987","467990"],"item_8_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2013-10","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"2","bibliographicPageEnd":"319","bibliographicPageStart":"309","bibliographicVolumeNumber":"55","bibliographic_titles":[{"bibliographic_title":"Journal of radiation research"}]}]},"item_8_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Weekly serial 4DCT scans were acquired under free breathing conditions to assess water equivalent pathlength (WEL) variations due to both intrafractional and interfractional changes in tissue thickness and density and to calculate proton dose distributions resulting from anatomical variations observed in serial 4DCT. A template of ROIs was defined on the anterior-posterior (AP) beam’s eye view and WEL measurements were made over these ROIs to quantify chest wall thickness variations. Interfractional proton dose distributions were calculated to assess changes in the expected dose distributions caused by range variations.\nMean intrafractional chest wall WEL changes during respiration varied by: -4.1mm(<-10.2mm), -3.6 mm(<-7.1mm), -3.2mm(<-5.6mm), -2.5mm(<-5.1mm) during respiration in the ITV, upper, middle and lower lung regions respectively. The mean interfractional chest wall WEL variation at week6 decreased by -4.0mm(<-8.6mm), -9.1mm(<-17.9mm), -9.4mm(<-25.3mm), -4.5mm(<-15.6mm) in the ITV, upper, middle and lower lung regions respectively. The variations were decomposed into anterior and posterior chest wall thickness changes. Dose overshoot beyond the target was observed when the initial boli was applied throughout the treatment course. This overshoot is due to chest wall thickness variations and target positional variations.\nThe radiological pathlength can vary significantly during respiration as well as over the course of several weeks of charged particle therapy. Intrafractional/interfractional chest wall thickness changes can be a significant source of range variation in treatment of lung tumors with charged particle beams, resulting in dose distribution perturbations from the initial plan. Consideration of these range variations should be considered in choosing the therapeutic charged particle beam range.","subitem_description_type":"Abstract"}]},"item_8_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"Oxford University Press"}]},"item_8_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1093/jrr/rrt114","subitem_relation_type_select":"DOI"}}]},"item_8_relation_17":{"attribute_name":"関連サイト","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_text":"http://jrr.oxfordjournals.org/content/early/2013/10/18/jrr.rrt114.full?sid=9e76b66a-a0b3-4860-bf1a-e4e2232724ba"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"http://jrr.oxfordjournals.org/content/early/2013/10/18/jrr.rrt114.full?sid=9e76b66a-a0b3-4860-bf1a-e4e2232724ba","subitem_relation_type_select":"URI"}}]},"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":"Mori, Shinichiro"}],"nameIdentifiers":[{"nameIdentifier":"467985","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Lei, DONG"}],"nameIdentifiers":[{"nameIdentifier":"467986","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"STARKSCHALL, George"}],"nameIdentifiers":[{"nameIdentifier":"467987","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"MOHAN, Radhe"}],"nameIdentifiers":[{"nameIdentifier":"467988","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"T.Y., CHEN George"}],"nameIdentifiers":[{"nameIdentifier":"467989","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"森 慎一郎","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"467990","nameIdentifierScheme":"WEKO"}]}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"A serial 4DCT study to quantify range variations in charged particle radiotherapy of thoracic cancers","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"A serial 4DCT study to quantify range variations in charged particle radiotherapy of thoracic cancers"}]},"item_type_id":"8","owner":"1","path":["1"],"pubdate":{"attribute_name":"公開日","attribute_value":"2014-11-06"},"publish_date":"2014-11-06","publish_status":"0","recid":"46897","relation_version_is_last":true,"title":["A serial 4DCT study to quantify range variations in charged particle radiotherapy of thoracic cancers"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T23:46:18.683781+00:00"}