{"created":"2025-02-21T03:12:04.905593+00:00","id":2006144,"links":{},"metadata":{"_buckets":{"deposit":"dc7020bc-9fd9-41c1-af1b-443405937dbc"},"_deposit":{"created_by":41,"id":"2006144","owners":[41],"pid":{"revision_id":0,"type":"depid","value":"2006144"},"status":"published"},"_oai":{"id":"oai:hiroshima.repo.nii.ac.jp:02006144","sets":["1730444907710"]},"author_link":[],"item_1617186331708":{"attribute_name":"Title","attribute_value_mlt":[{"subitem_title":"Variability of Repeated Coronary Artery Calcium Scoring and Radiation Dose on 64-slice and 16-slice CT by Prospective Electrocardiograph-triggered Axial and Retrospective Electrocardiograph-gated Spiral CT : A Phantom Study","subitem_title_language":"en"}]},"item_1617186419668":{"attribute_name":"Creator","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Horiguchi, Jun","creatorNameLang":"en"}],"familyNames":[{"familyName":"Horiguchi","familyNameLang":"en"}],"givenNames":[{"givenName":"Jun","givenNameLang":"en"}]},{"creatorNames":[{"creatorName":"Kiguchi, Masao","creatorNameLang":"en"}],"familyNames":[{"familyName":"Kiguchi","familyNameLang":"en"}],"givenNames":[{"givenName":"Masao","givenNameLang":"en"}]},{"creatorNames":[{"creatorName":"Fujioka, Chikako","creatorNameLang":"en"}],"familyNames":[{"familyName":"Fujioka","familyNameLang":"en"}],"givenNames":[{"givenName":"Chikako","givenNameLang":"en"}]},{"creatorNames":[{"creatorName":"Shen, Yun","creatorNameLang":"en"}],"familyNames":[{"familyName":"Shen","familyNameLang":"en"}],"givenNames":[{"givenName":"Yun","givenNameLang":"en"}]},{"creatorNames":[{"creatorName":"Arie, Ryuichi","creatorNameLang":"en"}],"familyNames":[{"familyName":"Arie","familyNameLang":"en"}],"givenNames":[{"givenName":"Ryuichi","givenNameLang":"en"}]},{"creatorNames":[{"creatorName":"Sunasaka, Kenichi","creatorNameLang":"en"}],"familyNames":[{"familyName":"Sunasaka","familyNameLang":"en"}],"givenNames":[{"givenName":"Kenichi","givenNameLang":"en"}]},{"creatorNames":[{"creatorName":"Kitagawa, Toshiro","creatorNameLang":"en"}],"familyNames":[{"familyName":"Kitagawa","familyNameLang":"en"}],"givenNames":[{"givenName":"Toshiro","givenNameLang":"en"}]},{"creatorNames":[{"creatorName":"Yamamoto, Hideya","creatorNameLang":"en"}],"familyNames":[{"familyName":"Yamamoto","familyNameLang":"en"}],"givenNames":[{"givenName":"Hideya","givenNameLang":"en"}]},{"creatorNames":[{"creatorName":"Ito, Katsuhide","creatorNameLang":"en"}],"familyNames":[{"familyName":"Ito","familyNameLang":"en"}],"givenNames":[{"givenName":"Katsuhide","givenNameLang":"en"}]}]},"item_1617186476635":{"attribute_name":"Access Rights","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_1617186499011":{"attribute_name":"Rights","attribute_value_mlt":[{"subitem_rights":"Copyright (c) 2008 AUR Published by Elsevier Inc."}]},"item_1617186609386":{"attribute_name":"Subject","attribute_value_mlt":[{"subitem_subject":"CT","subitem_subject_scheme":"Other"},{"subitem_subject":"coronary artery","subitem_subject_scheme":"Other"},{"subitem_subject":"calcium","subitem_subject_scheme":"Other"},{"subitem_subject":"radiation dose","subitem_subject_scheme":"Other"},{"subitem_subject":"490","subitem_subject_scheme":"NDC"}]},"item_1617186626617":{"attribute_name":"Description","attribute_value_mlt":[{"subitem_description":"Rationale and Objectives: To compare coronary artery calcium scores, the variability and radiation doses on 64-slice and 16-slice CT scanners by both prospective electrocardiograph (ECG)-triggered and retrospective ECG-gated scans.    Materials and Methods: Coronary artery models (n=3) with different plaque CT densities (~240 HU, ~600 HU and ~1000 HU) of four sizes (1 mm, 3 mm, 5 mm and 10 mm in length) on a cardiac phantom were scanned three times in 5 heart rate sequences. The tube current-time-products were set to almost the same on all four protocols (32.7 mAs for 64-slice prospective and retrospective scans, 33.3 mAs for 16-slice prospective and retrospective scans). Slice-thickness was set to 2.5 mm in order to keep the radiation dose low. Overlapping reconstruction with 1.25 mm increment was applied on the retrospective ECG-gated scan.    Results: The coronary artery calcium scores were not different between the four protocols (one-factor ANOVA, Agatston; p=0.32, volume; p=0.19 and mass; p=0.09). Two-factor factorial ANOVA test revealed that the interscan variability was different between protocols (p<0.01) and scoring algorithms (p<0.01). The average variability of Agatston/volume/mass scoring and effective doses were 64-slice prospective scan: 16%/15%/11% and 0.5 mSv, 64-slice retrospective scan: 11%/11%/8% and 3.7 mSv, 16-slice prospective scan: 20%/18%/13% and 0.6 mSv & 16-slice retrospective scan: 16%/15%/11% and 2.9 to 3.5 mSv (depending on the pitch).    Conclusions: Retrospective ECG-gated 64-slice CT showed the lowest variability. Prospective ECG-triggered 64-slice CT, with low radiation dose, shows low variability on coronary artery calcium scoring comparable to retrospective ECG-gated 16-slice CT.","subitem_description_language":"en"}]},"item_1617186643794":{"attribute_name":"Publisher","attribute_value_mlt":[{"subitem_publisher":"Elsevier Science Inc."}]},"item_1617186702042":{"attribute_name":"Language","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_1617186920753":{"attribute_name":"Source Identifier","attribute_value_mlt":[{"subitem_source_identifier":"1076-6332","subitem_source_identifier_type":"ISSN"},{"subitem_source_identifier":"AA11053376","subitem_source_identifier_type":"NCID"}]},"item_1617187024783":{"attribute_name":"Page Start","attribute_value_mlt":[{"subitem_start_page":"958"}]},"item_1617187056579":{"attribute_name":"Bibliographic Information","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2008-08","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"8","bibliographicPageEnd":"965","bibliographicPageStart":"958","bibliographicVolumeNumber":"15","bibliographic_titles":[{"bibliographic_title":"Academic Radiology"},{"bibliographic_title":"Academic Radiology"}]}]},"item_1617258105262":{"attribute_name":"Resource Type","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_1617265215918":{"attribute_name":"Version Type","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_b1a7d7d4d402bcce","subitem_version_type":"AO"}]},"item_1617353299429":{"attribute_name":"Relation","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1016/j.acra.2008.03.007","subitem_relation_type_select":"DOI"}},{"subitem_relation_type_id":{"subitem_relation_type_id_text":"http://dx.doi.org/10.1016/j.acra.2008.03.007","subitem_relation_type_select":"DOI"}}]},"item_1617605131499":{"attribute_name":"File","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","date":[{"dateType":"Available","dateValue":"2023-03-18"}],"displaytype":"simple","filename":"AcadRadiol_15_958.pdf","filesize":[{"value":"664.7 KB"}],"mimetype":"application/pdf","url":{"objectType":"fulltext","url":"https://hiroshima.repo.nii.ac.jp/record/2006144/files/AcadRadiol_15_958.pdf"},"version_id":"679e37b0-2f44-4ecd-82ea-6b629768a54c"}]},"item_1732771732025":{"attribute_name":"旧ID","attribute_value":"25935"},"item_title":"Variability of Repeated Coronary Artery Calcium Scoring and Radiation Dose on 64-slice and 16-slice CT by Prospective Electrocardiograph-triggered Axial and Retrospective Electrocardiograph-gated Spiral CT : A Phantom Study","item_type_id":"40003","owner":"41","path":["1730444907710"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2023-03-18"},"publish_date":"2023-03-18","publish_status":"0","recid":"2006144","relation_version_is_last":true,"title":["Variability of Repeated Coronary Artery Calcium Scoring and Radiation Dose on 64-slice and 16-slice CT by Prospective Electrocardiograph-triggered Axial and Retrospective Electrocardiograph-gated Spiral CT : A Phantom Study"],"weko_creator_id":"41","weko_shared_id":-1},"updated":"2025-02-21T06:42:15.238070+00:00"}