{"created":"2023-05-15T14:46:53.540847+00:00","id":64332,"links":{},"metadata":{"_buckets":{"deposit":"48d1e5d0-2e58-4c0b-9d06-6fe11b013d58"},"_deposit":{"created_by":1,"id":"64332","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"64332"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00064332","sets":["10:29"]},"author_link":["634283","634284","634285","634282"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2011-10-01","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Purpose: Scanning on an optimal path is important for raster scanning since the beam is not turned off in between two spots. The beam trajectory should stay within the tumor contours in order to minimize dose to the surrounding tissue. Typically this traveling salesman problem (TSP) is solved by optimization, though the optimization can be rather slow and it is often difficult to guarantee that the trajectory stays within the tumor contours.\nMethods: A heuristic algorithm based on a decision tree and segmentation was developed to find almost ideal scan paths through the spot maps and tested on a lung case.\nResults: The algorithm was bench-marked on the delivered scan trajectory and the computational time. The trajectory for the solvable cases was very similar to the one obtained with a classical TSP solver. The scan time was calculated and found to be acceptably short. Depending on the number of spots per energy layer the computational time could be lowered up to three orders of magnitude.\nConclusions: The developed algorithm showed to be robust, reliable and fast, though clinical cases exist, for example in the head and neck region, where our algorithm cannot be applied and a TSP optimization is required.","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":"6th Japan-Korea Joint Meeting on Medical Physics (JKMP) and 11th Asia-Oceania Congress of Medical Physics (AOCMP)","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":"Marius, Zenklusen Silvan"}],"nameIdentifiers":[{"nameIdentifier":"634282","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Mori, Shinichiro"}],"nameIdentifiers":[{"nameIdentifier":"634283","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ｚｅｎｋｌｕｓｅｎ Ｓｉｌｖａｎ Ｍａｒｉｕｓ","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"634284","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"森 慎一郎","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"634285","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 object","resourceuri":"http://purl.org/coar/resource_type/c_c94f"}]},"item_title":"Scan path algorithm for SFUD fields delivered by raster scanned charged particles beams","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Scan path algorithm for SFUD fields delivered by raster scanned charged particles beams"}]},"item_type_id":"10005","owner":"1","path":["29"],"pubdate":{"attribute_name":"公開日","attribute_value":"2011-10-03"},"publish_date":"2011-10-03","publish_status":"0","recid":"64332","relation_version_is_last":true,"title":["Scan path algorithm for SFUD fields delivered by raster scanned charged particles beams"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T21:12:48.906535+00:00"}