{"created":"2023-05-15T14:51:54.517730+00:00","id":70959,"links":{},"metadata":{"_buckets":{"deposit":"393e7d1f-9a6b-4d76-85d3-98078aa0ec2d"},"_deposit":{"created_by":1,"id":"70959","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"70959"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00070959","sets":["10:28"]},"author_link":["697352","697345","697344","697353","697348","697351","697346","697343","697350","697342","697347","697349"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2012-11-03","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"We are developing the OpenPET, an open type PET geometry having an accessible and observable open space between detector rings which allows easy access to a patient during PET measurements. Our first generation OpenPET which we called dual-ring OpenPET consisted of two detector rings having a gap between them and it could provide an extended axial field of view (FOV). For applications such as in-beam PET to monitor dose distribution in situ during particle therapy, however, higher sensitivity is required rather than a wide FOV. As the next generation OpenPET, we proposed the single-ring OpenPET which was a geometry having an accessible and observable open space with higher sensitivity and a reduced number of detectors than the earlier geometry. In this paper, we provide a theoretical analysis of the sensitivity for the single-ring OpenPET and we compare it with the dual-ring OpenPET and a geometry in which the conventional PET is positioned at a slant angle against the patient bed to form an accessible open space, which we called slant PET. The theoretical analysis shows that the single-ring OpenPET has a sensitivity 1.2 times higher than the dual-ring OpenPET and 1.3 times higher than the slant PET when designed for about 200 detector blocks, each with a front area of 2500 mm2. In addition, numerical simulation using the Geant4 Monte Carlo toolkit is done to show the three-dimensional imaging performance that the single-ring OpenPET realized with the ellipsoidal rings of block detectors. The numerical simulation demonstrates that the depth-of-interaction detector can provide uniform resolution even when the detectors are arranged in an ellipsoidal ring.","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":"2012 Nuclear Science Symposium, Medical Imaging Conference & Workshop on Room-Temperature Semiconductor X-Ray and Gamma-Ray Detectors","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":"Tashima, Hideaki"}],"nameIdentifiers":[{"nameIdentifier":"697342","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Hirano, Yoshiyuki"}],"nameIdentifiers":[{"nameIdentifier":"697343","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kinouchi, Shoko"}],"nameIdentifiers":[{"nameIdentifier":"697344","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Yoshida, Eiji"}],"nameIdentifiers":[{"nameIdentifier":"697345","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ito, Hiroshi"}],"nameIdentifiers":[{"nameIdentifier":"697346","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Yamaya, Taiga"}],"nameIdentifiers":[{"nameIdentifier":"697347","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"田島 英朗","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"697348","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"平野 祥之","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"697349","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"木内 尚子","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"697350","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"吉田 英治","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"697351","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"伊藤 浩","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"697352","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"山谷 泰賀","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"697353","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":"Theoretical and Numerical Analysis of the Single-Ring OpenPET Geometry for In-beam PET","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Theoretical and Numerical Analysis of the Single-Ring OpenPET Geometry for In-beam PET"}]},"item_type_id":"10005","owner":"1","path":["28"],"pubdate":{"attribute_name":"公開日","attribute_value":"2012-11-06"},"publish_date":"2012-11-06","publish_status":"0","recid":"70959","relation_version_is_last":true,"title":["Theoretical and Numerical Analysis of the Single-Ring OpenPET Geometry for In-beam PET"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T19:56:50.207011+00:00"}