{"created":"2023-05-15T14:46:43.720284+00:00","id":64110,"links":{},"metadata":{"_buckets":{"deposit":"57e46dae-75e1-4483-ba6d-848f98fe28a4"},"_deposit":{"created_by":1,"id":"64110","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"64110"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00064110","sets":["10:29"]},"author_link":["632407","632406"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2010-11-12","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Although over 800 linear accelerators have been used clinically in about 700 radiation therapy facilities in Japan, no external audit system existed for many years. A postal dosimetry audit system was established by the National Institute of Radiological Sciences (NIRS; SSDL). Instead of a thermoluminescent detector (TLD), we chose a radiophotoluminescent glass dosimeter (RGD) as a postal detector. RGDs and a water equivalent solid phantom were sent to radiotherapy hospitals, where the RGDs were irradiated with 1 Gy at the reference condition of the X-ray beam (Field size 10 cm x 10 cm, Depth 10cm) using the delivered phantom. Irradiated RGDs were then sent back to NIRS and the outputs were read by an RGD reader. The tolerance level was set to 5% considering the uncertainty of 1.6% (1 standard deviation). The NIRS group conducted a postal audit trial with 106 hospitals from 2006 to 2007 and achieved a 1.3% standard deviation for 191 beams. Based on this successful trial, the postal dose audit service was initiated in November 2007 and is now operated by the Association for Nuclear Technology in Medicine (ANTM). As of March 2010, 113 hospitals are participating in the audit. This includes a total of 127 linear accelerators and a total of 224 checked beams (4~15 MV). The results are presented as ratios of the NIRS RGD read dose to that stated by the user, DRGD /Dstat. The mean ratio was 1.005, its standard deviation 0.9%, and the outliers ranged between a minimum of 0.974 and a maximum of 1.036. To make the audit more practical, an audit for non-reference conditions has also been studied. This includes checks of dose variations with field size and wedge transmission. A slight correction factor was found necessary for field size variation. We began the audit of non-reference conditions from the April 2010.","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":"International Symposium on Standards, Applications and Quality Assurance in Medical Radiation Dosimetry","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":"Mizuno, Hideyuki"}],"nameIdentifiers":[{"nameIdentifier":"632406","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"水野 秀之","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"632407","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":"Dosimetry audits in radiotherapy using a radiophotoluminescent glass dosimeter in Japan","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Dosimetry audits in radiotherapy using a radiophotoluminescent glass dosimeter in Japan"}]},"item_type_id":"10005","owner":"1","path":["29"],"pubdate":{"attribute_name":"公開日","attribute_value":"2010-11-17"},"publish_date":"2010-11-17","publish_status":"0","recid":"64110","relation_version_is_last":true,"title":["Dosimetry audits in radiotherapy using a radiophotoluminescent glass dosimeter in Japan"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T21:15:19.368500+00:00"}