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Measurement of Opening and Closing Angles of Aortic Valve Prostheses In Vivo Using Dual-Source Computed Tomography: Comparison with Those of Manufacturers' in 10 Different Types

DC FieldValueLanguage
dc.contributor.author김영진-
dc.contributor.author김윤정-
dc.contributor.author서영주-
dc.contributor.author이혜정-
dc.contributor.author임동진-
dc.contributor.author최병욱-
dc.contributor.author허진-
dc.contributor.author홍유진-
dc.date.accessioned2016-02-04T11:49:41Z-
dc.date.available2016-02-04T11:49:41Z-
dc.date.issued2015-
dc.identifier.issn1229-6929-
dc.identifier.urihttps://ir.ymlib.yonsei.ac.kr/handle/22282913/141293-
dc.description.abstractOBJECTIVE: The aims of this study were to compare opening and closing angles of normally functioning mechanical aortic valves measured on dual-source computed tomography (CT) with the manufacturers' values and to compare CT-measured opening angles according to valve function. MATERIALS AND METHODS: A total of 140 patients with 10 different types of mechanical aortic valves, who underwent dual-source cardiac CT, were included. Opening and closing angles were measured on CT images. Agreement between angles in normally functioning valves and the manufacturer values was assessed using the interclass coefficient and the Bland-Altman method. CT-measured opening angles were compared between normal functioning valves and suspected dysfunctioning valves. RESULTS: The CT-measured opening angles of normally functioning valves and manufacturers' values showed excellent agreement for seven valve types (intraclass coefficient [ICC], 0.977; 95% confidence interval [CI], 0.962-0.987). The mean differences in opening angles between the CT measurements and the manufacturers' values were 1.2° in seven types of valves, 11.0° in On-X valves, and 15.5° in ATS valves. The manufacturers' closing angles and those measured by CT showed excellent agreement for all valve types (ICC, 0.953; 95% CI, 0.920-0.972). Among valves with suspected dysfunction, those with limitation of motion (LOM) and an increased pressure gradient (PG) had smaller opening angles than those with LOM only (p < 0.05). CONCLUSION: Dual-source cardiac CT accurately measures opening and closing angles in most types of mechanical aortic valves, compared with the manufacturers' values. Opening angles on CT differ according to the type of valve dysfunction and a decreased opening angle may suggest an elevated PG.-
dc.description.statementOfResponsibilityopen-
dc.format.extent1012~1023-
dc.relation.isPartOfKorean Journal of Radiology-
dc.rightsCC BY-NC-ND 2.0 KR-
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/2.0/kr/-
dc.titleMeasurement of Opening and Closing Angles of Aortic Valve Prostheses In Vivo Using Dual-Source Computed Tomography: Comparison with Those of Manufacturers' in 10 Different Types-
dc.typeArticle-
dc.contributor.collegeCollege of Medicine (의과대학)-
dc.contributor.departmentDept. of Radiology (영상의학)-
dc.contributor.googleauthorYoung Joo Suh-
dc.contributor.googleauthorYoung Jin Kim-
dc.contributor.googleauthorYoo Jin Hong-
dc.contributor.googleauthorHye Jeong Lee-
dc.contributor.googleauthorJin Hur-
dc.contributor.googleauthorDong Jin Im-
dc.contributor.googleauthorYun Jung Kim-
dc.contributor.googleauthorByoung Wook Choi-
dc.identifier.doi10.3348/kjr.2015.16.5.1012-
dc.admin.authorfalse-
dc.admin.mappingfalse-
dc.contributor.localIdA00727-
dc.contributor.localIdA03320-
dc.contributor.localIdA00794-
dc.contributor.localIdA01892-
dc.contributor.localIdA03361-
dc.contributor.localIdA04059-
dc.contributor.localIdA04370-
dc.contributor.localIdA04422-
dc.relation.journalcodeJ02884-
dc.contributor.alternativeNameKim, Young Jin-
dc.contributor.alternativeNameKim, Yun Jung-
dc.contributor.alternativeNameSuh, Young Joo-
dc.contributor.alternativeNameLee, Hye Jeong-
dc.contributor.alternativeNameIm, Dong Jin-
dc.contributor.alternativeNameChoi, Byoung Wook-
dc.contributor.alternativeNameHur, Jin-
dc.contributor.alternativeNameHong, Yoo Jin-
dc.contributor.affiliatedAuthorKim, Young Jin-
dc.contributor.affiliatedAuthorLee, Hye Jeong-
dc.contributor.affiliatedAuthorKim, Yun Jung-
dc.contributor.affiliatedAuthorSuh, Young Joo-
dc.contributor.affiliatedAuthorIm, Dong Jin-
dc.contributor.affiliatedAuthorChoi, Byoung Wook-
dc.contributor.affiliatedAuthorHur, Jin-
dc.contributor.affiliatedAuthorHong, Yoo Jin-
dc.rights.accessRightsfree-
dc.citation.volume16-
dc.citation.number5-
dc.citation.startPage1012-
dc.citation.endPage1023-
dc.identifier.bibliographicCitationKorean Journal of Radiology, Vol.16(5) : 1012-1023, 2015-
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers

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