{"created":"2023-05-15T14:56:50.602746+00:00","id":77145,"links":{},"metadata":{"_buckets":{"deposit":"1dea5aff-6f15-4d98-a33b-1d40b234f8ed"},"_deposit":{"created_by":1,"id":"77145","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"77145"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00077145","sets":["10:29"]},"author_link":["793862","793859","793861","793858","793856","793860","793863","793857","793855"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2019-10-30","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"A small animal depth-of-interaction (DOI) positron emission tomography (PET) detector based on a trapezoid shaped crystal was originally proposed by Simon Cherry’s group at UC Davis as a way to minimize the gaps between detector blocks. However, manufacturing the trapezoid shaped crystal is costly due to the complex geometry. As a more practical idea, here we developed a small animal DOI PET detector using a sub-surface laser engraving (SSLE) based trapezoid geometry. The imaging performance of the proposed PET scanner was presented in the most recent GATE User’s workshop. In the developed detector, we pixelized a 20 mm long monolithic trapezoid LYSO plate (top =  15.3 mm, bottom = 25.6 mm, thickness = 0.9 mm) into a 15 × 1 array by using SSLE to yield a top crystal pitch of 1.02 mm and a bottom crystal pitch of 1.71 mm. The 11 SSLE processed LYSO crystal plates were assembled together to make a 15 × 11 array. The LYSO plates were optically isolated by using as enhanced specular reflector (ESR). A 7×6 array SiPM (S13360-2050VE, Hamamatsu Photonics, Japan) with a pixel pitch of 2.4 mm and an 8×4 array SiPM (S13361-3050NE-04 Hamamatsu Photonics) with a pixel pitch of 3.2 mm were coupled to the top and bottom surfaces of the trapezoid LYSO array, respectively. For an optical coupling, room temperature vulcanized (RTV) light guides with a thickness of 1 mm were inserted between the LYSO and SiPM array. The SiPM output signals were multiplexed by using a resistive network, and then digitized by CAMAC DAQ. We could identify all the crystals in the 2D flood map. The measured DOI resolution and energy resolution were 2.3±0.6 mm and 11.6±0.7%, respectively. In the future, we want to develop a prototype trapezoid geometry small animal DOI PET scanner for high-resolution and high-sensitivity mouse brain imaging.","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":"2019 IEEE Nuclear Science Symposium and Medical Imaging Conference","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":"793855","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Nishikido, Fumihiko"}],"nameIdentifiers":[{"nameIdentifier":"793856","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Tashima, Hideaki"}],"nameIdentifiers":[{"nameIdentifier":"793857","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Sakai, Toshiaki"}],"nameIdentifiers":[{"nameIdentifier":"793858","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Yamaya, Taiga"}],"nameIdentifiers":[{"nameIdentifier":"793859","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kang, Hangyu","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"793860","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Nishikido, Fumihiko","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"793861","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Tashima, Hideaki","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"793862","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Yamaya, Taiga","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"793863","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":"Initial Results for a Small Animal DOI PET Detector with Sub-Surface Laser Engraving Based Trapezoid Geometry","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Initial Results for a Small Animal DOI PET Detector with Sub-Surface Laser Engraving Based Trapezoid Geometry"}]},"item_type_id":"10005","owner":"1","path":["29"],"pubdate":{"attribute_name":"公開日","attribute_value":"2019-10-16"},"publish_date":"2019-10-16","publish_status":"0","recid":"77145","relation_version_is_last":true,"title":["Initial Results for a Small Animal DOI PET Detector with Sub-Surface Laser Engraving Based Trapezoid Geometry"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T23:57:39.213333+00:00"}