{"created":"2022-02-02T02:14:35.847860+00:00","id":2012587,"links":{},"metadata":{"_buckets":{"deposit":"b21669c6-3603-44ad-a5fe-634b2e557461"},"_deposit":{"id":"2012587","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"2012587"},"status":"published"},"_oai":{"id":"oai:u-ryukyu.repo.nii.ac.jp:02012587","sets":["1642838158423:1642838158860:1642838159351","1642838403551:1642838409905"]},"author_link":[],"item_1617186331708":{"attribute_name":"Title","attribute_value_mlt":[{"subitem_1551255647225":"Quantitative Emphysema Measurement On Ultra-High-Resolution CT Scans","subitem_1551255648112":"en"}]},"item_1617186419668":{"attribute_name":"Creator","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Xu, Yanyan","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"徐, 妍妍","creatorNameLang":"ja"}]}]},"item_1617186476635":{"attribute_name":"Access Rights","attribute_value_mlt":[{"subitem_1522299639480":"open access","subitem_1600958577026":"http://purl.org/coar/access_right/c_abf2"}]},"item_1617186499011":{"attribute_name":"Rights","attribute_value_mlt":[{"subitem_1522650717957":"ja","subitem_1522651041219":"© 2019 Xu et al. This work is published and licensed by Dove Medical Press Limited. The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution – Non Commercial (unported, v3.0) License"},{"subitem_1522650717957":"en","subitem_1522650727486":"http://creativecommons.org/licenses/by-nc/3.0/","subitem_1522651041219":"http://creativecommons.org/licenses/by-nc/3.0/"}]},"item_1617186609386":{"attribute_name":"Subject","attribute_value_mlt":[{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"chronic obstructive pulmonary disease"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"computed tomography"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"emphysema"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"ultra-high-resolution CT"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"quantitative measurement"}]},"item_1617186626617":{"attribute_name":"Description","attribute_value_mlt":[{"subitem_description":"Purpose: To evaluate the advantages of ultra-high-resolution computed tomography (U-HRCT) scans for the quantitative measurement of emphysematous lesions over conventional HRCTscans. Materials and methods: This study included 32 smokers under routine clinical care who underwent chest CT performed by a U-HRCT scanner. Chronic obstructive pulmonary disease (COPD) was diagnosed in 13 of the 32 participants. Scan data were reconstructed by 2 different protocols: i) U-HRCT mode with a 1024×1024 matrix and 0.25-mm slice thickness and ii) conventional HRCT mode with a 512×512 matrix and 0.5-mm slice thickness. On both types of scans, lesions of emphysema were quantitatively assessed as percentage of low attenuation volume (LAV%, <−950 Hounsfield units). LAV% values determined for scan data from the U-HRCT and conventional HRCT modes were compared by the Wilcoxon matched-pairs signed rank test. The association between LAV% and forced expiratory volume in 1 s per forced vital capacity (FEV_1/FVC) was assessed by the Spearman rank correlation test. Results: Mean values for LAV% determined for the U-HRCT and conventional HRCT modes were 8.9 ± 8.8% and 7.3 ± 8.4%, respectively (P<0.0001). The correlation coefficients for LAV% and FEV_1/FVC on the U-HRCT and conventional HRCT modes were 0.50 and 0.49, respectively (both P<0.01). Conclusion: Compared with conventional HRCT scans, U-HRCT scans reveal emphysematous lesions in greater detail, and provide slightly increased correlation with airflow limitation.","subitem_description_type":"Other"},{"subitem_description":"学位論文","subitem_description_type":"Other"}]},"item_1617186643794":{"attribute_name":"Publisher","attribute_value_mlt":[{"subitem_1522300295150":"en","subitem_1522300316516":"University of the Ryukyus"}]},"item_1617186702042":{"attribute_name":"Language","attribute_value_mlt":[{"subitem_1551255818386":"eng"}]},"item_1617186783814":{"attribute_name":"Identifier","attribute_value_mlt":[{"subitem_identifier_type":"HDL","subitem_identifier_uri":"http://hdl.handle.net/20.500.12000/46665"}]},"item_1617186920753":{"attribute_name":"Source Identifier","attribute_value_mlt":[{"subitem_1522646500366":"ISSN","subitem_1522646572813":"1178-2005"}]},"item_1617186941041":{"attribute_name":"Source Title","attribute_value_mlt":[{"subitem_1522650068558":"en","subitem_1522650091861":"International Journal of Chronic Obstructive Pulmonary Disease"}]},"item_1617187056579":{"attribute_name":"Bibliographic Information","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2019-10-08","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"2290","bibliographicPageStart":"2283","bibliographicVolumeNumber":"14"}]},"item_1617187087799":{"attribute_name":"Dissertation Number","attribute_value_mlt":[{"subitem_1551256171004":"乙第227号"}]},"item_1617187112279":{"attribute_name":"Degree Name","attribute_value_mlt":[{"subitem_1551256126428":"博士(医学)","subitem_1551256129013":"ja"}]},"item_1617187136212":{"attribute_name":"Date Granted","attribute_value_mlt":[{"subitem_1551256096004":"2020-01-29"}]},"item_1617258105262":{"attribute_name":"Resource Type","attribute_value_mlt":[{"resourcetype":"doctoral thesis","resourceuri":"http://purl.org/coar/resource_type/c_db06"}]},"item_1617265215918":{"attribute_name":"Version Type","attribute_value_mlt":[{"subitem_1522305645492":"VoR","subitem_1600292170262":"http://purl.org/coar/version/c_970fb48d4fbd8a85"}]},"item_1617353299429":{"attribute_name":"Relation","attribute_value_mlt":[{"subitem_1522306287251":{"subitem_1522306382014":"DOI","subitem_1522306436033":"http://doi.org/10.2147/COPD.S223605"}},{"subitem_1522306287251":{"subitem_1522306382014":"DOI","subitem_1522306436033":"http://doi.org/10.2147/COPD.S223605"}}]},"item_1617605131499":{"attribute_name":"File","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","filename":"iron227text.pdf","mimetype":"application/pdf","url":{"objectType":"fulltext","url":"https://u-ryukyu.repo.nii.ac.jp/record/2012587/files/iron227text.pdf"},"version_id":"e4195c9b-4e25-4cac-9979-37f40ee7d5ce"},{"accessrole":"open_access","filename":"iron227review.pdf","mimetype":"application/pdf","url":{"objectType":"other","url":"https://u-ryukyu.repo.nii.ac.jp/record/2012587/files/iron227review.pdf"},"version_id":"e442b807-ce0a-4d7f-9a19-1478359cb67c"},{"accessrole":"open_access","filename":"iron227abstract.pdf","mimetype":"application/pdf","url":{"objectType":"abstract","url":"https://u-ryukyu.repo.nii.ac.jp/record/2012587/files/iron227abstract.pdf"},"version_id":"d0cbf348-0434-48f9-8929-349cf7450932"}]},"item_1617944105607":{"attribute_name":"Degree Grantor","attribute_value_mlt":[{"subitem_1551256015892":[{"subitem_1551256027296":"18001","subitem_1551256029891":"kakenhi"}],"subitem_1551256037922":[{"subitem_1551256042287":"琉球大学","subitem_1551256047619":"ja"}]}]},"item_title":"Quantitative Emphysema Measurement On Ultra-High-Resolution CT Scans","item_type_id":"15","owner":"1","path":["1642838159351","1642838409905"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2020-09-14"},"publish_date":"2020-09-14","publish_status":"0","recid":"2012587","relation_version_is_last":true,"title":["Quantitative Emphysema Measurement On Ultra-High-Resolution CT Scans"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2022-10-31T07:05:36.324909+00:00"}