{"created":"2023-05-15T14:39:31.984075+00:00","id":54296,"links":{},"metadata":{"_buckets":{"deposit":"6eae700f-4175-4baf-95fd-62e2c6bcda94"},"_deposit":{"created_by":1,"id":"54296","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"54296"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00054296","sets":["2"]},"author_link":["554561","554557","554554","554556","554558","554550","554552","554555","554559","554560","554553","554551"],"item_10003_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2011-02","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"000","bibliographicPageStart":"000","bibliographicVolumeNumber":"7622","bibliographic_titles":[{"bibliographic_title":"Proceedings of SPIE"}]}]},"item_10003_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"There is a concern that image lag may reduce accuracy of real-time target tracking in radiotherapy. This study was\nperformed to investigate influence of image lag on the accuracy of target tracking in radiotherapy. Fluoroscopic images\nwere obtained using a direct type of dynamic flat-panel detector (FPD) system under conditions of target tracking during\nradiotherapy. The images continued to be read out after X-irradiations and cutoff, and image lag properties in the system\nwere then determined. Subsequently, a tungsten materials plate with a precision edge was mounted on to a motor control\ndevice, which provided a constant velocity. The plate was moved into the center of the detector at movement rate of 10\nand 20 mm/s, covering lung tumor movement of normal breathing, and MTF and profile curves were measured on the\nedges covering and uncovering the detector. A lung tumor with blurred edge due to image lag was simulated using the\nresults and then superimposed on breathing chest radiographs of a patient. The moving target with and without image lag\nwas traced using a template-matching technique. In the results, the target could be traced within a margin for error in\nexternal radiotherapy. The results indicated that there was no effect of image lag on target tracking in usual breathing\nspeed in a radiotherapy situation. Further studies are required to investigate influence by the other factors, such as\nexposure dose, target size and shape, imaging rate, and thickness of a patients body.","subitem_description_type":"Abstract"}]},"item_10003_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0277-786X","subitem_source_identifier_type":"ISSN"}]},"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":"Tanaka, Rie"}],"nameIdentifiers":[{"nameIdentifier":"554550","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ichikawa, Katsuhiro"}],"nameIdentifiers":[{"nameIdentifier":"554551","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Mori, Shinichiro"}],"nameIdentifiers":[{"nameIdentifier":"554552","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Dobashi, Suguru"}],"nameIdentifiers":[{"nameIdentifier":"554553","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kumagai, Motoki"}],"nameIdentifiers":[{"nameIdentifier":"554554","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Sanada, Shigeru"}],"nameIdentifiers":[{"nameIdentifier":"554555","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"et.al"}],"nameIdentifiers":[{"nameIdentifier":"554556","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"田中 利恵","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"554557","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"市川 勝弘","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"554558","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"森 慎一郎","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"554559","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"土橋 卓","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"554560","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"熊谷 始紀","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"554561","nameIdentifierScheme":"WEKO"}]}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"conference paper","resourceuri":"http://purl.org/coar/resource_type/c_5794"}]},"item_title":"Effects of image lag on real-time target tracking in radiotherapy","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Effects of image lag on real-time target tracking in radiotherapy"}]},"item_type_id":"10003","owner":"1","path":["2"],"pubdate":{"attribute_name":"公開日","attribute_value":"2011-09-25"},"publish_date":"2011-09-25","publish_status":"0","recid":"54296","relation_version_is_last":true,"title":["Effects of image lag on real-time target tracking in radiotherapy"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T23:02:36.955734+00:00"}