{"created":"2023-07-27T06:29:26.775290+00:00","id":14234,"links":{},"metadata":{"_buckets":{"deposit":"2b4c9440-482f-45db-9a5c-f83931cfa0cd"},"_deposit":{"created_by":3,"id":"14234","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"14234"},"status":"published"},"_oai":{"id":"oai:kanazawa-u.repo.nii.ac.jp:00014234","sets":["1132:1133:1134"]},"author_link":["646","24476","24477","24478"],"item_4_biblio_info_8":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2015-07-23","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"2","bibliographicPageEnd":"330","bibliographicPageStart":"320","bibliographicVolumeNumber":"8","bibliographic_titles":[{"bibliographic_title":"Radiological Physics and Technology"}]}]},"item_4_description_21":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"We devised a new noise filtering method to reduce the noise in the line spread function (LSF) for presampled modulation transfer function (MTF) analysis with the edge method. A filter was designed to reduce noise effectively using a position-dependent filter controlled by the boundary frequency b for low-pass filtering, which is calculated by 1/2d (d: distance from the LSF center). In this filtering process, strong filters with very low b can be applied to regions distant from the LSF center, and the region near the LSF center can be maintained simultaneously by a correspondingly high b. Presampled MTF accuracies derived by use of the proposed method and an edge spread function (ESF)-fitting method were compared by use of simulated ESFs with and without noise, resembling a computed radiography (CR) and an indirect-type flat panel detector (FPD), respectively. In addition, the edge images of clinical CR, indirect-type FPD, and direct-type FPD systems were examined. For a simulated ESF without noise, the calculated MTFs of the variable filtering method agreed precisely with the true MTFs. The excellent noise-reduction ability of the variable filter was demonstrated for all simulated noisy ESFs and those of three clinical systems. Although the ESF-fitting method provided excellent noise reduction only for the CR-like simulated ESF with noise, its noise elimination performance could not be demonstrated due to the lesser robustness of the fitting. © 2015, Japanese Society of Radiological Technology and Japan Society of Medical Physics.","subitem_description_type":"Abstract"}]},"item_4_description_22":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"発行後1年より全文公開","subitem_description_type":"Other"}]},"item_4_publisher_17":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"日本放射線技術学会 and 日本医学物理学会Japanese Society of Radiological Technology and Japan Society of Medical Physics / Springer-Verlag Tokyo"}]},"item_4_relation_12":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isVersionOf","subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1007/s12194-015-0325-2","subitem_relation_type_select":"DOI"}}]},"item_4_rights_23":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"The final publication is available at www.springerlink.com/article/10.1007%2Fs12194-015-0325-2"}]},"item_4_source_id_11":{"attribute_name":"NCID","attribute_value_mlt":[{"subitem_source_identifier":"AA12236881","subitem_source_identifier_type":"NCID"}]},"item_4_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1865-0333","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":"Higashide, Ryo"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Ichikawa, Katsuhiro"}],"nameIdentifiers":[{},{},{},{}]},{"creatorNames":[{"creatorName":"Kunitomo, Hiroshi"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Ohashi, Kazuya"}],"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-HIGASHIDE-R-320.pdf","filesize":[{"value":"497.3 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"ME-PR-HIGASHIDE-R-320.pdf","url":"https://kanazawa-u.repo.nii.ac.jp/record/14234/files/ME-PR-HIGASHIDE-R-320.pdf"},"version_id":"dd2397dc-bacd-48e5-9743-593d13795052"}]},"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":"Application of a variable filter for presampled modulation transfer function analysis with the edge method","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Application of a variable filter for presampled modulation transfer function analysis with the edge method"}]},"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":"14234","relation_version_is_last":true,"title":["Application of a variable filter for presampled modulation transfer function analysis with the edge method"],"weko_creator_id":"3","weko_shared_id":-1},"updated":"2023-07-28T00:50:45.564314+00:00"}