{"created":"2023-05-15T14:44:41.234573+00:00","id":61089,"links":{},"metadata":{"_buckets":{"deposit":"02404e11-39ba-4128-b77a-73bbf50282a3"},"_deposit":{"created_by":1,"id":"61089","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"61089"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00061089","sets":["10:29"]},"author_link":["605242","605240","605241"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2005-10-01","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"The jPET-D4 is a high-performance brain PET scanner which achieves not only high spatial resolution but also high scanner sensitivity by discriminating 4-layer depth-of-interaction (DOI) information. The scanner is designed to have 5 rings of 24 detector blocks each, and each detector block consists of 1,024 GSO crystals of 2.9mm x 2.9mm x 7.5mm, which are arranged in 4 layers of 16 x 16 arrays. At this stage, one of the 5 block-detector rings has been assembled into the jPET-D4 gantry. In this paper, we investigate the transaxial imaging performance of the jPET-D4 prototype. In order to reduce computational cost while retaining the advantages of DOI information in iterative image reconstruction, we have proposed the DOI compression (DOIC) method which reduces data dimensions with suppression of resolution loss. This method was applied to treat real data of needle sources on a uniform background. The result shows that almost uniform spatial resolution of 2-3mm is obtained over the field-of-view by using the 4-layer DOI information.","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 4th Japan-Korea Joint Meeting on Medical Physics and The 5th Asia-Oceania Congress of Medical Physics","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":"Yamaya, Taiga"}],"nameIdentifiers":[{"nameIdentifier":"605240","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"et.al"}],"nameIdentifiers":[{"nameIdentifier":"605241","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"山谷 泰賀","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"605242","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":"The jPET-D4: Transaxial Imaging Performance of a Novel 4-Layer Depth-of-Interaction PET Scanner","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"The jPET-D4: Transaxial Imaging Performance of a Novel 4-Layer Depth-of-Interaction PET Scanner"}]},"item_type_id":"10005","owner":"1","path":["29"],"pubdate":{"attribute_name":"公開日","attribute_value":"2005-09-30"},"publish_date":"2005-09-30","publish_status":"0","recid":"61089","relation_version_is_last":true,"title":["The jPET-D4: Transaxial Imaging Performance of a Novel 4-Layer Depth-of-Interaction PET Scanner"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T21:46:21.562054+00:00"}