{"created":"2023-05-15T15:01:12.344760+00:00","id":83032,"links":{},"metadata":{"_buckets":{"deposit":"3d7ea52e-c740-499f-91f0-f15b963fefa0"},"_deposit":{"created_by":1,"id":"83032","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"83032"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00083032","sets":["10:29"]},"author_link":["995238","995237"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2021-06-11","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Objectives: Development of a total-body small animal PET scanner with a 4-layer DOI detector to achieve high-sensitivity and uniform spatial resolution for rodent imaging.\nMethods: The proposed total-body small animal PET (TBSAP) scanner has a 53 mm inner diameter and 325.6 mm axial FOV which can cover a rat whole-body. The TBSAP consists of 6 rings each of which has 10 DOI detectors. Five out of 6 rings are used sine the detector calibration of the 5th ring has not been finished yet. Each DOI PET detector, which was originally developed for the OpenPET, consists of a 4-layer Zr-doped GSO (GSOZ) crystal array and an 8×8 array multi-anode PMT. Each crystal layer has a 16×16 array of GSOZ crystals (2.8×2.8×7.5 mm3) which yields a total crystal thickness of 30 mm. The PMT anode signals are multiplexed using a resistive network, and then digitized by the 8-bit DAQ system (Hamamatsu, Japan). The performance of the PET scanner was evaluated by using a 22Na point source (D=0.25 mm). The effects of DOI information on the radial and axial resolutions were investigated by using a Derenzo phantom. The list-mode data were reconstructed by using ordered-subset-expectation-maximization (OSEM) algorithm.\nResults: The measured spatial resolutions at the center and 30 mm radial offset were 1.52 mm, and 1.75 mm, respectively. The peak absolute sensitivity was 16.7% with an energy window of 400-600 keV. The 2.2 mm rods were resolved clearly in the Derenzo phantom study. The parallax errors in radial and axial directions can be effectively reduced with the 4-layer DOI information.\nConclusions: The prototype total-body small animal PET scanner with a 4-layer DOI detector provides a uniform spatial resolution of 1.87± 0.19 mm across the FOV and the peak sensitivity of 16.7% at the center of the FOV. We plan to perform a real-time whole-body rat imaging using the proposed PET scanner.\n","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":"Society of Nuclear Medicine and Molecular Imaging 2021 Virtual Annual Meeting","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":"Kang, Hangyu"}],"nameIdentifiers":[{"nameIdentifier":"995237","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kang, Hangyu","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"995238","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":"A total-body small animal PET scanner with a 4-layer DOI detector","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"A total-body small animal PET scanner with a 4-layer DOI detector"}]},"item_type_id":"10005","owner":"1","path":["29"],"pubdate":{"attribute_name":"公開日","attribute_value":"2021-06-25"},"publish_date":"2021-06-25","publish_status":"0","recid":"83032","relation_version_is_last":true,"title":["A total-body small animal PET scanner with a 4-layer DOI detector"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T20:02:54.910505+00:00"}