{"created":"2023-05-15T14:52:25.795384+00:00","id":71584,"links":{},"metadata":{"_buckets":{"deposit":"eb470602-ace5-4eae-8db8-1ced7aac243d"},"_deposit":{"created_by":1,"id":"71584","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"71584"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00071584","sets":["10:28"]},"author_link":["704026","704033","704037","704031","704036","704038","704035","704025","704024","704029","704030","704032","704027","704034","704023","704028"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2014-11-13","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"We are developing a brain-dedicated PET-MRI system in which our original, four-layer DOI-PET detectors are integrated with a birdcage RF-coil. The main development issue is making the PET ring diameter as small as possible while avoiding interference with the RF-coil, in order to realize a highly sensitive PET system with high spatial resolution by making full use of DOI measurement capabilities. In this paper, we finally developed a full-ring prototype of the proposed PET-MRI system, and we carried out simultaneous measurements with a 3.0 T MRI. The prototype system consists of eight four-layer DOI PET detectors and the birdcage RF-coil developed for the proposed system. The PET detectors consist of six monolithic multi-pixel photon counter (MPPC) arrays (S11064-050P) arranged in a row, a readout circuit, two four-layer DOI scintillator arrays and a shielding box. LYSO crystals are arranged in 19 × 6 × 4 array to form a crystal block, and each crystal block is coupled to three MPPC arrays. Each crystal element is 2.0 × 2.0 × 5.0 mm3. The diameter of the RF-coil elements is 27.5cm. There are eight coil elements in the RF-coil and the PET detectors are mounted on all gaps between the RF-coil elements. We evaluated performance of the prototype system. The PET detectors, the RF-coil and the cables were in an MRI room. A data acquisition system and power supply for the MPPCs and preamplifiers were outside the MRI room and connected to all the detectors through a penetration panel. Gradient echo (GRE) and spin echo (SE) methods were used in an evaluation experiment on the simultaneous measurements. We observed no degradation of crystal identification and energy performances. We conclude that influence of the simultaneous measurements on the PET performance is negligible.","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":"2014IEEE NSS/MIC 参加・発表","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":"錦戸, 文彦"}],"nameIdentifiers":[{"nameIdentifier":"704023","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"清水, 浩大"}],"nameIdentifiers":[{"nameIdentifier":"704024","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"菅, 幹生"}],"nameIdentifiers":[{"nameIdentifier":"704025","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"稲玉, 直子"}],"nameIdentifiers":[{"nameIdentifier":"704026","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"吉田, 英治"}],"nameIdentifiers":[{"nameIdentifier":"704027","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"田島, 英朗"}],"nameIdentifiers":[{"nameIdentifier":"704028","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"小畠, 隆行"}],"nameIdentifiers":[{"nameIdentifier":"704029","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"山谷, 泰賀"}],"nameIdentifiers":[{"nameIdentifier":"704030","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"錦戸 文彦","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"704031","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"清水 浩大","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"704032","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"菅 幹生","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"704033","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"稲玉 直子","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"704034","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"吉田 英治","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"704035","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"田島 英朗","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"704036","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"小畠 隆行","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"704037","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"山谷 泰賀","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"704038","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 Full-Ring Prototype PET-MRI System Based on Four-Layer DOI-PET Detectors Integrated with a RF Coil","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"A Full-Ring Prototype PET-MRI System Based on Four-Layer DOI-PET Detectors Integrated with a RF Coil"}]},"item_type_id":"10005","owner":"1","path":["28"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-02-20"},"publish_date":"2015-02-20","publish_status":"0","recid":"71584","relation_version_is_last":true,"title":["A Full-Ring Prototype PET-MRI System Based on Four-Layer DOI-PET Detectors Integrated with a RF Coil"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T19:49:37.891554+00:00"}