{"created":"2021-03-01T06:17:01.702609+00:00","id":10215,"links":{},"metadata":{"_buckets":{"deposit":"f37988cb-d799-4042-b26c-8d2f7eacbaaf"},"_deposit":{"id":"10215","owners":[],"pid":{"revision_id":0,"type":"depid","value":"10215"},"status":"published"},"_oai":{"id":"oai:nagoya.repo.nii.ac.jp:00010215","sets":["499:500:501"]},"author_link":["30912","30913","30914"],"item_10_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2008-10-23","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"11","bibliographicPageEnd":"5150","bibliographicPageStart":"5134","bibliographicVolumeNumber":"35","bibliographic_titles":[{"bibliographic_title":"Medical Physics","bibliographic_titleLang":"en"}]}]},"item_10_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"A technique called phase contrast mammography (PCM) has only recently been applied in clinical  examination. In this application, PCM images are acquired at a 1.75× magnification using an x-ray tube for clinical use, and then reduced to the real size of the object by image processing. The  images showed enhanced object edges; reportedly, this enhancement occurred because of the refraction of x rays through a cylindrical object. The authors measured the physical image characteristics of PCM to compare the image characteristics of PCM with those of conventional mammography. More specifically, they measured the object-edge-response characteristics and the noise characteristics in the spatial frequency domain. The results revealed that the edge-response characteristics of PCM outperformed those of conventional mammography. In addition, the characteristics changed with the object-placement conditions and the object shapes. The noise characteristics of PCM were better than those of conventional mammography. Subsequently, to verify why object edges were enhanced in PCM images, the authors simulated image profiles that would be obtained if the x rays were refracted and totally reflected by using not only a cylindrical substance but also a planar substance as the object. So, they confirmed that the object edges in PCM images were enhanced because x rays were refracted irrespective of the object shapes. Further, they found that the edge enhancements depended on the object shapes and positions. It was also proposed that the larger magnification than 1.75 in the commercialized system might be more suitable for PCM. Finally, the authors investigated phase-contrast effects to breast tissues by the simulation and demonstrated that PCM would be helpful in the diagnoses of mammography.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_10_identifier_60":{"attribute_name":"URI","attribute_value_mlt":[{"subitem_identifier_type":"DOI","subitem_identifier_uri":"http://dx.doi.org/10.1118/1.2968091"},{"subitem_identifier_type":"HDL","subitem_identifier_uri":"http://hdl.handle.net/2237/12035"}]},"item_10_publisher_32":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"American Institite of Physics","subitem_publisher_language":"en"}]},"item_10_relation_11":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isVersionOf","subitem_relation_type_id":{"subitem_relation_type_id_text":"https://doi.org/10.1118/1.2968091","subitem_relation_type_select":"DOI"}}]},"item_10_rights_12":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"Copyright (2008) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.","subitem_rights_language":"en"}]},"item_10_select_15":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_select_item":"publisher"}]},"item_10_source_id_7":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0094-2405","subitem_source_identifier_type":"PISSN"}]},"item_10_text_14":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_text_value":"application/pdf"}]},"item_1615787544753":{"attribute_name":"出版タイプ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Yamazaki, Asumi","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"30912","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ichikawa, Katsuhiro","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"30913","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kodera, Yoshie","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"30914","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2018-02-20"}],"displaytype":"detail","filename":"MPH005134.pdf","filesize":[{"value":"2.0 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"MPH005134.pdf","objectType":"fulltext","url":"https://nagoya.repo.nii.ac.jp/record/10215/files/MPH005134.pdf"},"version_id":"bde11ca7-cf50-4b9e-8fdf-6a1b9e0ebfee"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"digital mammography","subitem_subject_scheme":"Other"},{"subitem_subject":"phase contrast","subitem_subject_scheme":"Other"},{"subitem_subject":"edge enhancement","subitem_subject_scheme":"Other"},{"subitem_subject":"image characteristics","subitem_subject_scheme":"Other"}]},"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":"Investigation of physical image characteristics and phenomenon of edge enhancement by phase contrast using equipment typical for mammography","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Investigation of physical image characteristics and phenomenon of edge enhancement by phase contrast using equipment typical for mammography","subitem_title_language":"en"}]},"item_type_id":"10","owner":"1","path":["501"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2009-08-17"},"publish_date":"2009-08-17","publish_status":"0","recid":"10215","relation_version_is_last":true,"title":["Investigation of physical image characteristics and phenomenon of edge enhancement by phase contrast using equipment typical for mammography"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-01-16T05:08:34.304372+00:00"}