{"created":"2023-07-27T06:29:50.253029+00:00","id":14606,"links":{},"metadata":{"_buckets":{"deposit":"e4571bf0-4b9b-4b9e-9822-9fbeb04dd5bf"},"_deposit":{"created_by":3,"id":"14606","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"14606"},"status":"published"},"_oai":{"id":"oai:kanazawa-u.repo.nii.ac.jp:00014606","sets":["1132:1133:1134"]},"author_link":["25866","1059","25865"],"item_4_biblio_info_8":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2011-06-01","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"2","bibliographicPageEnd":"76","bibliographicPageStart":"72","bibliographicVolumeNumber":"39","bibliographic_titles":[{"bibliographic_title":"Journal of Nuclear Medicine Technology"}]}]},"item_4_description_21":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"The choice of injected dose of 18F-FDG and acquisition time is important in obtaining consistently high-quality PET images. The aim of this study was to determine the optimal acquisition protocols based on patient weight for 3-dimensional lutetium oxyorthosilicate PET/CT. Methods: This study was a retrospective analysis of 76 patients ranging from 29 to 101 kg who were injected with 228-395.2 MBq of 18F-FDG for PET imaging. The study population was divided into 4 weightbased groups: less than 45 kg (group 1), 45-59 kg (group 2), 60-74 kg (group 3), and 75 kg or more (group 4). We measured the true coincidence rate, random coincidence rate, noise-equivalent counting rate (NECR), and random fraction and evaluated image quality by the coefficient of variance (COV) in the largest liver slices. Results: The true coincidence rate, random coincidence rate, and NECR significantly increased with increasing injected dose per kilogram (r 5 0.91, 0.83, and 0.90; all P < 0.01). NECR maximized at 10.11 MB/kg in underweight patients. The true coincidence rate differed significantly among the 4 groups, except for group 3 versus group 4 (P < 0.01). The ratio of the true coincidence rate for group 2 to groups 3 and 4 was 1.4 and 1.6, respectively. The average random fraction for all 4 groups was approximately 35%. The COV of the 4 groups differed for all pairs (P < 0.01). The COVs in overweight patients were larger than those in underweight patients, and image quality in overweight patients was poor. Conclusion: We modified acquisition protocols for 18F-FDG PET/CT according to the characteristics of a 3-dimensional lutetium orthosilicate PET scanner and PET image quality based on patient weight. The optimal acquisition time was approximately 1.4-1.6 times longer in overweight patients than in normal-weight patients. Estimation of optimal acquisition times using the true coincidence rate is more important than other variables in improving PET image quality. © 2011 by the Society of Nuclear Medicine, Inc.","subitem_description_type":"Abstract"}]},"item_4_description_22":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"Thesis of Nagaki, Akio / 長木 昭男 博士学位論文(金沢大学 / 大学院医薬保健学総合研究科)","subitem_description_type":"Other"}]},"item_4_publisher_17":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"Society of Nuclear Medicine"}]},"item_4_relation_12":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isVersionOf","subitem_relation_type_id":{"subitem_relation_type_id_text":"10.2967/jnmt.110.081661","subitem_relation_type_select":"DOI"}}]},"item_4_source_id_11":{"attribute_name":"NCID","attribute_value_mlt":[{"subitem_source_identifier":"AA00703709","subitem_source_identifier_type":"NCID"}]},"item_4_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0091-4916","subitem_source_identifier_type":"ISSN"}]},"item_4_version_type_25":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_ab4af688f83e57aa","subitem_version_type":"AM"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Nagaki, Akio"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Onoguchi, Masahisa"}],"nameIdentifiers":[{},{}]},{"creatorNames":[{"creatorName":"Matsutomo, Norikazu"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2017-10-03"}],"displaytype":"detail","filename":"ME-PR-NAGAKI-A-72.pdf","filesize":[{"value":"486.5 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"ME-PR-NAGAKI-A-72.pdf","url":"https://kanazawa-u.repo.nii.ac.jp/record/14606/files/ME-PR-NAGAKI-A-72.pdf"},"version_id":"c4edc954-158b-4bcf-9259-793c8ac51119"}]},"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":"Patient weight-based acquisition protocols to optimize18F-FDG PET/CT image quality","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Patient weight-based acquisition protocols to optimize18F-FDG PET/CT image quality"}]},"item_type_id":"4","owner":"3","path":["1134"],"pubdate":{"attribute_name":"公開日","attribute_value":"2017-10-03"},"publish_date":"2017-10-03","publish_status":"0","recid":"14606","relation_version_is_last":true,"title":["Patient weight-based acquisition protocols to optimize18F-FDG PET/CT image quality"],"weko_creator_id":"3","weko_shared_id":-1},"updated":"2023-07-28T00:44:17.054714+00:00"}