Greiningarhæfni 64 sneiða tölvusneiðmyndatækni til samanburðar við hefðbundna kransæðaþræðingu

2.50
Hdl Handle:
http://hdl.handle.net/2336/20192
Title:
Greiningarhæfni 64 sneiða tölvusneiðmyndatækni til samanburðar við hefðbundna kransæðaþræðingu
Other Titles:
Diagnostic accuracy of 64-slice computed tomography compared with coronary angiography
Authors:
Inga Rós Valgeirsdóttir; Sigurdís Haraldsdóttir; Sigurpáll S. Scheving; Jónína Guðjónsdóttir; Axel F. Sigurðsson; Þórarinn Guðnason; Kristján Eyjólfsson; Birna Jónsdóttir; Karl Andersen
Citation:
Læknablaðið 2008, 94(3):199-205
Issue Date:
1-Mar-2008
Abstract:
Objective: The aim of this study was to evaluate the diagnostic accuracy (sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV)) of 64-slice multidetector computed tomography (MDCT) compared with quantitative coronary angiography (QCA) for detection of coronary artery disease (CAD). Material and methods: Sixty-nine patients participating in a study of coronary in-stent restenosis were investigated. After a 64-slice MDCT scan patients were evaluated by QCA. The coronary arteries were divided into 15 segments and stenosis was graded for each segment by both methods. The diagnostic accuracy of 64-slice MDCT was evaluated using the QCA as the gold standard. Results: Among the 69 patients included in the study 13 (19%) were female and 56 male. The mean age was 63 (SD 10) years. The following risk factors were present: high blood pressure 67%, elevated blood cholesterol 54%, diabetes 12% and family history of CAD 71%. Current smokers were 22% and previous smokers were 48%. Altogether 663 segments were examined. Of those 221 (33%) segments were excluded; 103 because of stents, 48 because of heavy calcification, 41 because of motion artifacts and 29 because the segments were less than 1.5 mm in diameter. The mean time between MDCT and QCA was 6.3 (SD 12.1) days. The sensitivity of 64-slice MDCT for diagnosing significant stenosis (>/= 50% according to QCA) was 20%, the specificity was 94%, PPV was 16%, NPV was 95% and the accuracy was 89%. Conclusion: High NPV and specificity indicates that MDCT is useful for accurately excluding significant CAD but the low sensitivity and low PPV indicate that the method is not accurate in diagnosing coronary artery stenosis of 50% or more according to QCA. Key words: coronary artery disease, multidetector computed tomography, cardiac catheterisation. Correspondence: Karl Andersen, andersen@landspitali.is.; Tilgangur: Markmið rannsóknarinnar var að meta greiningarhæfni (næmi, sértæki, jákvætt forspárgildi, neikvætt forspárgildi og nákvæmni) 64 sneiða tölvusneiðmyndatækni (TS-tækni) á kransæðasjúkdómi með hjartaþræðingu sem viðmið. Efniviður og aðferðir: Rannsóknarhópurinn samanstóð af 69 sjúklingum sem tóku þátt í rannsókn á endurþrengslum í stoðnetum kransæða. Framkvæmd var TS af kransæðum til að meta æðaþrengsli. Nokkrum dögum síðar voru þátttakendur hjartaþræddir. Kransæðatrénu var skipt upp í 15 hluta. Æðaþrengsli voru metin í öllum hlutum æðatrésins með báðum aðferðunum. Greiningarhæfni 64 sneiða TS-tækni var metin og kransæðaþræðing höfð sem viðmið. Niðurstöður: Í rannsókninni voru 13 (19%) konur og 56 karlar. Meðalaldur þátttakenda var 63 (SD 10) ár, háþrýsting höfðu 67%, háar blóðfitur 54%, sykursýki 12% og ættarsaga um kransæðasjúkdóm var til staðar í 71% tilvika. Reykingamenn voru 22% og fyrrum reykingamenn 48%. Samtals 663 æðahlutar voru rannsakaðir. Af þeim voru 221 (33,4%) útilokaðir; 103 vegna stoðneta, 48 vegna truflana af völdum kalks, 41 vegna hreyfitruflana og 29 þar sem æðin var minni en 1,5 mm í þvermál. Meðaltími milli TS og hjartaþræðingar voru 6,3 (SD 12,1) dagar. Næmi 64 sneiða TS til greiningar marktækra þrengsla (?50% þrengsli samkvæmt hjartaþræðingu) var 20%, sértæki 94%, jákvætt forspárgildi 16%, neikvætt forspárgildi 95% og nákvæmni 89%. Ályktun: Hátt neikvætt forspárgildi og hátt sértæki gefur til kynna að TS-rannsókn sé gagnleg til að útiloka kransæðasjúkdóm. Lágt næmi og lágt jákvætt forspárgildi benda til að aðferðin sé ekki góð til að meta hvort kransæðaþrengsli séu 50% eða meiri við hjartaþræðingu.
Description:
Neðst á síðunni er hægt að nálgast greinina í heild sinni með því að smella á hlekkinn View/Open
Additional Links:
http://www.laeknabladid.is/2008/03/nr/3102

Full metadata record

DC FieldValue Language
dc.contributor.authorInga Rós Valgeirsdóttir-
dc.contributor.authorSigurdís Haraldsdóttir-
dc.contributor.authorSigurpáll S. Scheving-
dc.contributor.authorJónína Guðjónsdóttir-
dc.contributor.authorAxel F. Sigurðsson-
dc.contributor.authorÞórarinn Guðnason-
dc.contributor.authorKristján Eyjólfsson-
dc.contributor.authorBirna Jónsdóttir-
dc.contributor.authorKarl Andersen-
dc.date.accessioned2008-03-10T10:57:42Z-
dc.date.available2008-03-10T10:57:42Z-
dc.date.issued2008-03-01-
dc.date.submitted2008-03-10-
dc.identifier.citationLæknablaðið 2008, 94(3):199-205en
dc.identifier.issn0023-7213-
dc.identifier.pmid18310782-
dc.identifier.urihttp://hdl.handle.net/2336/20192-
dc.descriptionNeðst á síðunni er hægt að nálgast greinina í heild sinni með því að smella á hlekkinn View/Openen
dc.description.abstractObjective: The aim of this study was to evaluate the diagnostic accuracy (sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV)) of 64-slice multidetector computed tomography (MDCT) compared with quantitative coronary angiography (QCA) for detection of coronary artery disease (CAD). Material and methods: Sixty-nine patients participating in a study of coronary in-stent restenosis were investigated. After a 64-slice MDCT scan patients were evaluated by QCA. The coronary arteries were divided into 15 segments and stenosis was graded for each segment by both methods. The diagnostic accuracy of 64-slice MDCT was evaluated using the QCA as the gold standard. Results: Among the 69 patients included in the study 13 (19%) were female and 56 male. The mean age was 63 (SD 10) years. The following risk factors were present: high blood pressure 67%, elevated blood cholesterol 54%, diabetes 12% and family history of CAD 71%. Current smokers were 22% and previous smokers were 48%. Altogether 663 segments were examined. Of those 221 (33%) segments were excluded; 103 because of stents, 48 because of heavy calcification, 41 because of motion artifacts and 29 because the segments were less than 1.5 mm in diameter. The mean time between MDCT and QCA was 6.3 (SD 12.1) days. The sensitivity of 64-slice MDCT for diagnosing significant stenosis (>/= 50% according to QCA) was 20%, the specificity was 94%, PPV was 16%, NPV was 95% and the accuracy was 89%. Conclusion: High NPV and specificity indicates that MDCT is useful for accurately excluding significant CAD but the low sensitivity and low PPV indicate that the method is not accurate in diagnosing coronary artery stenosis of 50% or more according to QCA. Key words: coronary artery disease, multidetector computed tomography, cardiac catheterisation. Correspondence: Karl Andersen, andersen@landspitali.is.en
dc.description.abstractTilgangur: Markmið rannsóknarinnar var að meta greiningarhæfni (næmi, sértæki, jákvætt forspárgildi, neikvætt forspárgildi og nákvæmni) 64 sneiða tölvusneiðmyndatækni (TS-tækni) á kransæðasjúkdómi með hjartaþræðingu sem viðmið. Efniviður og aðferðir: Rannsóknarhópurinn samanstóð af 69 sjúklingum sem tóku þátt í rannsókn á endurþrengslum í stoðnetum kransæða. Framkvæmd var TS af kransæðum til að meta æðaþrengsli. Nokkrum dögum síðar voru þátttakendur hjartaþræddir. Kransæðatrénu var skipt upp í 15 hluta. Æðaþrengsli voru metin í öllum hlutum æðatrésins með báðum aðferðunum. Greiningarhæfni 64 sneiða TS-tækni var metin og kransæðaþræðing höfð sem viðmið. Niðurstöður: Í rannsókninni voru 13 (19%) konur og 56 karlar. Meðalaldur þátttakenda var 63 (SD 10) ár, háþrýsting höfðu 67%, háar blóðfitur 54%, sykursýki 12% og ættarsaga um kransæðasjúkdóm var til staðar í 71% tilvika. Reykingamenn voru 22% og fyrrum reykingamenn 48%. Samtals 663 æðahlutar voru rannsakaðir. Af þeim voru 221 (33,4%) útilokaðir; 103 vegna stoðneta, 48 vegna truflana af völdum kalks, 41 vegna hreyfitruflana og 29 þar sem æðin var minni en 1,5 mm í þvermál. Meðaltími milli TS og hjartaþræðingar voru 6,3 (SD 12,1) dagar. Næmi 64 sneiða TS til greiningar marktækra þrengsla (?50% þrengsli samkvæmt hjartaþræðingu) var 20%, sértæki 94%, jákvætt forspárgildi 16%, neikvætt forspárgildi 95% og nákvæmni 89%. Ályktun: Hátt neikvætt forspárgildi og hátt sértæki gefur til kynna að TS-rannsókn sé gagnleg til að útiloka kransæðasjúkdóm. Lágt næmi og lágt jákvætt forspárgildi benda til að aðferðin sé ekki góð til að meta hvort kransæðaþrengsli séu 50% eða meiri við hjartaþræðingu.is
dc.languageICE-
dc.language.isoisen
dc.publisherLæknafélag Íslands, Læknafélag Reykjavíkuren
dc.relation.urlhttp://www.laeknabladid.is/2008/03/nr/3102en
dc.subjectKransæðasjúkdómaren
dc.subjectHjartaþræðingaren
dc.subjectSneiðmyndatökuren
dc.subject.classificationLBL12-
dc.subject.meshTomography, X-Ray Computeden
dc.subject.meshCoronary Artery Diseaseen
dc.subject.meshHeart Catheterizationen
dc.titleGreiningarhæfni 64 sneiða tölvusneiðmyndatækni til samanburðar við hefðbundna kransæðaþræðinguis
dc.title.alternativeDiagnostic accuracy of 64-slice computed tomography compared with coronary angiographyen
dc.typeArticleen
dc.identifier.journalLæknablaðiðen

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