{"created":"2023-06-20T15:49:00.376633+00:00","id":3529,"links":{},"metadata":{"_buckets":{"deposit":"66d4176a-cc0a-4544-8196-5943b9c6794d"},"_deposit":{"created_by":4,"id":"3529","owners":[4],"pid":{"revision_id":0,"type":"depid","value":"3529"},"status":"published"},"_oai":{"id":"oai:hama-med.repo.nii.ac.jp:00003529","sets":["2:15:17"]},"author_link":["10364"],"item_5_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"4D-flow MRI解析から測定されるII型エンドリークの血行動態がステントグラフト内挿術術後の瘤径増大の有無を決定しうる","subitem_alternative_title_language":"ja"}]},"item_5_biblio_info_5":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2019-07","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"1","bibliographicPageEnd":"116","bibliographicPageStart":"107","bibliographicVolumeNumber":"70","bibliographic_titles":[{"bibliographic_title":"Journal of Vascular Surgery","bibliographic_titleLang":"en"}]}]},"item_5_date_granted_17":{"attribute_name":"学位授与年月日","attribute_value_mlt":[{"subitem_dategranted":"2019-03-13"}]},"item_5_degree_grantor_15":{"attribute_name":"学位授与機関","attribute_value_mlt":[{"subitem_degreegrantor":[{"subitem_degreegrantor_language":"ja","subitem_degreegrantor_name":"浜松医科大学"}],"subitem_degreegrantor_identifier":[{"subitem_degreegrantor_identifier_name":"13802","subitem_degreegrantor_identifier_scheme":"kakenhi"}]}]},"item_5_degree_name_12":{"attribute_name":"学位名","attribute_value_mlt":[{"subitem_degreename":"博士（医学）","subitem_degreename_language":"ja"}]},"item_5_description_13":{"attribute_name":"学位の区分","attribute_value_mlt":[{"subitem_description":"doctoral","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_5_description_14":{"attribute_name":"学位の分野","attribute_value_mlt":[{"subitem_description":"医学系研究科","subitem_description_language":"ja","subitem_description_type":"Other"}]},"item_5_description_9":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Objective: The objective of this study was to investigate the hemodynamic parameters of type II endoleaks (T2ELs) to predict sac expansion using four-dimensional flow-sensitive magnetic resonance imaging (4D-flow MRI) analysis. Methods: Patients who underwent endovascular aneurysm repair (EVAR) and were diagnosed with a T2EL were included in the study. Using 4D-flow MRI at 7 days, the peak flow velocity and amplitude of dynamics of blood flow per minute were measured in each T2EL vessel. The peak flow velocity was defined as the maximum of the absolute value of the blood flow velocity. The amplitude of dynamics of blood flow in the tributary arteries was defined as the sum of the absolute values of the inflow and outflow volume in each vessel. The amplitude of dynamics of blood flow in the tributary arteries per sac was calculated in each sac. The aneurysm sac diameter was measured by computed tomography (CT) at 1 year. The patients were divided into two groups according to the presence or absence of sac expansion.\nResults: Of 155 patients who underwent EVAR, both CT angiography and 4D-flow MRI were performed in 107 patients at 7 days after EVAR. Among them, 39 (36.4%) were found to have a T2EL, of whom 28 were re-evaluated with CT angiography and 4D-flow at 1 year; 7 patients had expanding sacs (expanding group), whereas 21 had nonexpanding sacs (not-expanding group). At 7 days, 28 patients had 80 T2EL vessels detected by 4D-flow MRI, of which 39 vessels (48.8%) had stopped flowing at 1 year (transient vessels); 41 vessels (51.3%) had sustained flow (persistent vessels). The persistent vessels had significantly larger peak flow velocity and amplitude of dynamics of blood flow. The comprehensive analysis of T2EL vessels per sac identified that the amplitude of dynamics of blood flow in the tributary arteries per sac was significantly higher in the expanding group than in the not-expanding group. A receiver operating characteristic curve analysis revealed that the sensitivity and specificity of sac enlargement at a cutoff value of 3750mm3/min were 85.7% and 76.2%, respectively.\nConclusions: The fate of aneurysm sacs with T2ELs after EVAR has remained difficult to predict. A comprehensive analysis of concurrent multiple T2EL vessels using 4D-flow MRI analysis may enable prediction of the sac expansion after EVAR.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_5_dissertation_number_18":{"attribute_name":"学位授与番号","attribute_value_mlt":[{"subitem_dissertationnumber":"甲第798号"}]},"item_5_publisher_6":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"Elsevier","subitem_publisher_language":"en"}]},"item_5_relation_26":{"attribute_name":"PubMed番号","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"30792053","subitem_relation_type_select":"PMID"}}]},"item_5_relation_28":{"attribute_name":"出版社DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://doi.org/10.1016/j.jvs.2018.09.048","subitem_relation_type_select":"DOI"}}]},"item_5_source_id_19":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0741-5214","subitem_source_identifier_type":"PISSN"}]},"item_5_source_id_20":{"attribute_name":"EISSN","attribute_value_mlt":[{"subitem_source_identifier":"1097-6809","subitem_source_identifier_type":"EISSN"}]},"item_5_version_type_32":{"attribute_name":"著者版フラグ","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":"片橋, 一人","creatorNameLang":"ja"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2019-12-05"}],"displaytype":"detail","filename":"DT_798ronbun.pdf","filesize":[{"value":"1.6 MB"}],"format":"application/pdf","licensetype":"license_11","mimetype":"application/pdf","url":{"label":"論文本文","objectType":"fulltext","url":"https://hama-med.repo.nii.ac.jp/record/3529/files/DT_798ronbun.pdf"},"version_id":"fcd7d2d1-eb35-4785-9b03-28e67ff945f9"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Aortic aneurysm","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Endoleak","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Hemodynamics","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Stent graft","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Magnetic resonance imaging","subitem_subject_language":"en","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":"doctoral thesis","resourceuri":"http://purl.org/coar/resource_type/c_db06"}]},"item_title":"Flow dynamics of type II endoleaks can determine sac expansion after endovascular aneurysm repair using four-dimensional flow-sensitive magnetic resonance imaging analysis","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Flow dynamics of type II endoleaks can determine sac expansion after endovascular aneurysm repair using four-dimensional flow-sensitive magnetic resonance imaging analysis","subitem_title_language":"en"}]},"item_type_id":"5","owner":"4","path":["17"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2019-12-05"},"publish_date":"2019-12-05","publish_status":"0","recid":"3529","relation_version_is_last":true,"title":["Flow dynamics of type II endoleaks can determine sac expansion after endovascular aneurysm repair using four-dimensional flow-sensitive magnetic resonance imaging analysis"],"weko_creator_id":"4","weko_shared_id":-1},"updated":"2023-10-17T04:12:47.476477+00:00"}