{"created":"2023-05-15T14:52:33.311813+00:00","id":71753,"links":{},"metadata":{"_buckets":{"deposit":"8f739600-02da-4ed8-a51f-9b6867cc87f3"},"_deposit":{"created_by":1,"id":"71753","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"71753"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00071753","sets":["10:28"]},"author_link":["706260","706263","706265","706257","706252","706264","706267","706256","706258","706254","706262","706266","706255","706253","706259","706261"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2014-09-17","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"At National Institute of Radiological Sciences (NIRS), three-dimensional irradiation with carbon-ion pencil-beam scanning has been performed from 2011. We have been commissioning the irradiation method that employs more than 200 multiple beam energies supplied by synchrotron instead of the energy degraders. The accuracy of the beam energy/range is required for heavy ion treatment especially for using scanning method. ICRU78 recommend checking the range constancy for daily QA. Few-points depth dose measurement using ion chamber is employed for range verification of current daily QA procedure in NIRS. The measurement time for one energy is about 1 minute. Therefore easy and simple range verification system is required. The purpose of this work is to develop range verification system using scintillator and CCD (charge-coupled device) camera and to estimate the accuracy of the range verification using the system. Using proposed system, projected depth dose distribution could be provided by one measurement. This system has potential to be employed for relative range check and range constancy check as comparing with reference data. A NE102 plastic scintillator block was selected for obtained pure tranceparent block. The scintillator was mounted in the black box in order to shade a light in the room. The CCD camera (Type BU-41L, 1360x1024 pixels, Bitran Corp., Japan) was installed perpendicular to the beam axis. Therefore two-dimensional image projected depth dose distribution is provided by measurement. Total 101 mono-energy carbon beams that are in the range from 56 to 430 MeV/n at 6 mm range-in-water interval were tested. The measurement was performed energy by energy sequentially. The range resolution test was performed using thin PMMA plate placed upstream of the system. Measured images were compared with reference images to calculate the relative range deviation using least square method. Short and long time reproducibility and fluence dependence were verified. Measurement time was about 2 minutes for 101 energy beams. Peak-entrance ratio was small due to quenching effect and absorption of the light within the scintillator block. The 6 mm range difference was clearly divided. Reproducibility was well. The difference of fluence with normal treatment operation didn’t effect the range verification. From the results it was concluded that the range check system using scintillator and CCD have nice characteristics for range verification with short time.","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":"The 3rd International Beam Instrumentation Coference (IBIC2014)","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":"Saotome, Naoya"}],"nameIdentifiers":[{"nameIdentifier":"706252","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Furukawa, Takuji"}],"nameIdentifiers":[{"nameIdentifier":"706253","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Hara, Yousuke"}],"nameIdentifiers":[{"nameIdentifier":"706254","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Mizushima, Kota"}],"nameIdentifiers":[{"nameIdentifier":"706255","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Noda, Koji"}],"nameIdentifiers":[{"nameIdentifier":"706256","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Shirai, Toshiyuki"}],"nameIdentifiers":[{"nameIdentifier":"706257","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Tansho, Ryohei"}],"nameIdentifiers":[{"nameIdentifier":"706258","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Saraya, Yuichi"}],"nameIdentifiers":[{"nameIdentifier":"706259","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"早乙女 直也","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"706260","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"古川 卓司","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"706261","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"原 洋介","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"706262","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"水島 康太","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"706263","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"野田 耕司","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"706264","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"白井 敏之","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"706265","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"丹正 亮平","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"706266","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"皿谷 有一","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"706267","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":"Range verification system using scintillator and CCD camera system","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Range verification system using scintillator and CCD camera system"}]},"item_type_id":"10005","owner":"1","path":["28"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-06-30"},"publish_date":"2015-06-30","publish_status":"0","recid":"71753","relation_version_is_last":true,"title":["Range verification system using scintillator and CCD camera system"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T19:47:47.183588+00:00"}