{"created":"2021-03-01T06:22:10.170781+00:00","id":5472,"links":{},"metadata":{"_buckets":{"deposit":"bc0b62dc-cea9-4519-a6fc-acf10838a0ef"},"_deposit":{"id":"5472","owners":[],"pid":{"revision_id":0,"type":"depid","value":"5472"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:00005472","sets":["125:363:364","9:233:280"]},"item_7_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2013-03-25","bibliographicIssueDateType":"Issued"},"bibliographic_titles":[{}]}]},"item_7_date_granted_25":{"attribute_name":"学位授与年月日","attribute_value_mlt":[{"subitem_dategranted":"2013-03-25"}]},"item_7_degree_grantor_23":{"attribute_name":"学位授与機関","attribute_value_mlt":[{"subitem_degreegrantor":[{"subitem_degreegrantor_name":"University of Tokyo (東京大学)"}]}]},"item_7_degree_name_20":{"attribute_name":"学位名","attribute_value_mlt":[{"subitem_degreename":"博士(医学)"}]},"item_7_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Adaptive Iterative Dose Reduction (AIDR) 3Dおよび生食後押しを使用することで、より低被曝、少量の造影剤で冠動脈computed tomography angiography (CTA)を行えると言われている。まず、管電流を40％低減して撮像し、AIDR 3Dを用いて再構成を行っても、画質は保持されることが示された。また、ファントム実験では大焦点撮像で500 mAまでなら小焦点270 mA撮像をすることで主観的画質が保たれると考えられた。次に、生食後押しを行うことで、特に遠位部で冠動脈の増強効果やcontrast-to-noise ratio (CNR)の改善を認めつつ、造影剤量を14％低減できると考えられた。さらに、単相性注入と比較して二相性注入により、冠動脈近位部と遠位部の濃度差を減少できると考えられた。","subitem_description_type":"Abstract"}]},"item_7_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.15083/00005463","subitem_identifier_reg_type":"JaLC"}]},"item_7_select_21":{"attribute_name":"学位","attribute_value_mlt":[{"subitem_select_item":"doctoral"}]},"item_7_text_22":{"attribute_name":"学位分野","attribute_value_mlt":[{"subitem_text_value":"Medical Science(医学)"}]},"item_7_text_24":{"attribute_name":"研究科・専攻","attribute_value_mlt":[{"subitem_text_value":"Department of Radiology and Biomedical Engineering , Graduate School of Medicine(医学系研究科生体物理医学専攻)"}]},"item_7_text_4":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"東京大学医学系研究科生体物理医学専攻"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"富澤, 信夫"}],"nameIdentifiers":[{"nameIdentifier":"11415","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":"2017-06-01"}],"displaytype":"detail","filename":"H24_4042_tomizawa.pdf","filesize":[{"value":"1.8 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"H24_4042_tomizawa.pdf","url":"https://repository.dl.itc.u-tokyo.ac.jp/record/5472/files/H24_4042_tomizawa.pdf"},"version_id":"0ef5a83b-9f27-4c7c-bdd2-128f69f70f6d"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"thesis","resourceuri":"http://purl.org/coar/resource_type/c_46ec"}]},"item_title":"320列CTを用いた冠動脈CTAにおける低侵襲な撮像法に関する検討","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"320列CTを用いた冠動脈CTAにおける低侵襲な撮像法に関する検討"}]},"item_type_id":"7","owner":"1","path":["280","364"],"pubdate":{"attribute_name":"公開日","attribute_value":"2014-01-14"},"publish_date":"2014-01-14","publish_status":"0","recid":"5472","relation_version_is_last":true,"title":["320列CTを用いた冠動脈CTAにおける低侵襲な撮像法に関する検討"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2022-12-19T03:47:03.188983+00:00"}