{"_buckets": {"deposit": "37ed3a8d-2cf5-415b-9bee-2e30f82d67da"}, "_deposit": {"created_by": 1, "id": "80864", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "80864"}, "status": "published"}, "_oai": {"id": "oai:repo.qst.go.jp:00080864", "sets": ["29"]}, "author_link": ["916867", "916868"], "item_10005_date_7": {"attribute_name": "発表年月日", "attribute_value_mlt": [{"subitem_date_issued_datetime": "2020-11-05", "subitem_date_issued_type": "Issued"}]}, "item_10005_description_5": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "The spatial resolution of a small animal positron emission tomography (PET) scanner deteriorates significantly at the field of view (FOV) periphery due to the parallax error. In a previous study, we proposed a staggered 3-layer depth-of-interaction (DOI) detector with a 1 mm crystal pitch to achieve high resolution while minimizing the parallax error. In this study, we present the initial results of a prototype small animal PET scanner using a staggered 3-layer DOI detector for submillimeter mouse brain imaging. The prototype small animal PET scanner had a 52 mm inner diameter and 11 mm axial coverage. The LYSO crystal array had the pixel pitch of 1 mm and total thickness of 15 mm. The PET scanner consisted of 16 DOI detectors which of each had a 3-layer staggered LYSO crystal array. The LYSO crystal array was optically coupled to a 4×4 SiPM (Hamamatsu, S14161-3050HS-04, Japan) array with a pixel pitch of 3.2 mm. The SiPM anode signals were multiplexed using a resistive network and then digitized by the Hamamatsu DAQ with an integration time of 250 ns. The coincidence data were generated by using coincidence process software with a coincidence window of 20 ns. The measured spatial resolutions at the center and 15 mm radial offset were 0.67 mm, and 1.56 mm for filtered-back-projection (FBP), and 0.50 mm, and 1.16 mm for ordered-subset-expectation-maximization (OSEM), respectively. The peak absolute sensitivity was 0.76% with an energy window of 400-600 keV. In conclusion, we developed a high-resolution and high-sensitivity mouse brain dedicated PET scanner with 3-layer DOI detectors. In the near future, we will perform a mouse brain imaging study using the prototype PET scanner.", "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": "2020 Virtual 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": "916867", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Kang, Hangyu", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "916868", "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 Imaging Results of a Mouse Brain PET Prototype with a Staggered 3-Layer DOI Detector", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "Initial Imaging Results of a Mouse Brain PET Prototype with a Staggered 3-Layer DOI Detector"}]}, "item_type_id": "10005", "owner": "1", "path": ["29"], "permalink_uri": "https://repo.qst.go.jp/records/80864", "pubdate": {"attribute_name": "公開日", "attribute_value": "2020-11-02"}, "publish_date": "2020-11-02", "publish_status": "0", "recid": "80864", "relation": {}, "relation_version_is_last": true, "title": ["Initial Imaging Results of a Mouse Brain PET Prototype with a Staggered 3-Layer DOI Detector"], "weko_shared_id": -1}