{"created":"2023-05-15T14:37:13.356371+00:00","id":47987,"links":{},"metadata":{"_buckets":{"deposit":"5905dbfd-0770-46f4-9340-1439a5b0067f"},"_deposit":{"created_by":1,"id":"47987","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"47987"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00047987","sets":["1"]},"author_link":["481704","481708","481711","481703","481710","481709","481705","481702","481706","481707"],"item_8_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2017-05","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"4550","bibliographicPageStart":"4541","bibliographicVolumeNumber":"62","bibliographic_titles":[{"bibliographic_title":"Physics in Medicine & Biology"}]}]},"item_8_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"There is a growing interest in developing brain PET scanners with high\nsensitivity and high spatial resolution for early diagnosis of neurodegenerative\ndiseases and studies of brain functions. Sensitivity of the PET scanner can be\nimproved by increasing the solid angle. However, conventional PET scanners\nare designed based on a cylindrical geometry, which may not be the most\nefficient design for brain imaging in terms of the balance between sensitivity\nand cost. We proposed a dedicated brain PET scanner based on a hemispheric\nshape detector and a chin detector (referred to as the helmet-chin PET), which\nis designed to maximize the solid angle by increasing the number of linesof-\nresponse in the hemisphere. The parallax error, which PET scanners with\na large solid angle tend to have, can be suppressed by the use of depth-ofinteraction\ndetectors. In this study, we carry out a realistic evaluation of the\nhelmet-chin PET using Monte Carlo simulation based on the 4-layer GSO\ndetector which consists of a 16 × 16 × 4 array of crystals with dimensions\nof 2.8 × 2.8 × 7.5 mm3. The purpose of this simulation is to show the gain in\nimaging performance of the helmet-chin PET compared with the cylindrical\nPET using the same number of detectors in each configuration. The sensitivity\nof the helmet-chin PET evaluated with a cylindrical phantom has a significant\nincrease, especially at the top of the (field-of-view) FOV. The peak-NECR\nof the helmet-chin PET is 1.4 times higher compared to the cylindrical PET.\nThe helmet-chin PET provides relatively low noise images throughout the\nFOV compared to the cylindrical PET which exhibits enhanced noise at the\nperipheral regions. The results show the helmet-chin PET can significantly\nimprove the sensitivity and reduce the noise in the reconstructed images.","subitem_description_type":"Abstract"}]},"item_8_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"IOP Publishing"}]},"item_8_relation_13":{"attribute_name":"PubMed番号","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"28489608","subitem_relation_type_select":"PMID"}}]},"item_8_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1088/1361-6560/aa685c","subitem_relation_type_select":"DOI"}}]},"item_8_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"13616560","subitem_source_identifier_type":"ISSN"}]},"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":"Ahmed, Abdella"}],"nameIdentifiers":[{"nameIdentifier":"481702","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Tashima, Hideaki"}],"nameIdentifiers":[{"nameIdentifier":"481703","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Yoshida, Eiji"}],"nameIdentifiers":[{"nameIdentifier":"481704","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Nishikido, Fumihiko"}],"nameIdentifiers":[{"nameIdentifier":"481705","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Yamaya, Taiga"}],"nameIdentifiers":[{"nameIdentifier":"481706","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ａｈｍｅｄ Ａｂｄｅｌｌａ Ｍｏｈａｍｍｅｄｎｕｒ","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"481707","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"田島 英朗","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"481708","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"吉田 英治","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"481709","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"錦戸 文彦","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"481710","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"山谷 泰賀","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"481711","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":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Simulation study comparing the helmet-chin PET with a cylindrical PET of the same number of detectors","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Simulation study comparing the helmet-chin PET with a cylindrical PET of the same number of detectors"}]},"item_type_id":"8","owner":"1","path":["1"],"pubdate":{"attribute_name":"公開日","attribute_value":"2017-05-23"},"publish_date":"2017-05-23","publish_status":"0","recid":"47987","relation_version_is_last":true,"title":["Simulation study comparing the helmet-chin PET with a cylindrical PET of the same number of detectors"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T23:33:18.953296+00:00"}