Impacts of coronary artery calcium on the diagnostic accuracy in detecting stenoses using 64-slice spiral CT
- VernacularTitle:冠状动脉钙化对64层螺旋CT诊断冠状动脉狭窄的影响
- Author:
Hao SUN
;
Ming-Ming GAO
;
Zhan-Hong MA
;
Lei ZHANG
;
Xin-Chun YANG
;
Yong-Hui CHI
;
Yong-Li XUE
;
Lin WU
;
Yan-Jiang WANG
;
- Publication Type:Journal Article
- Keywords:
Tomography,X-ray computed;
Coronary diseases;
Calcinosis
- From:
Chinese Journal of Radiology
1999;0(10):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the diagnostic accuracy of 64-slice spiral computed tomography(MSCT)in detecting coronary artery lesions and to analyze the impacts of coronary artery calcium on its diagnostic accuracy.Methods Sixty patients underwent 64-MSCT coronary angiography and conventional coronary angiography(CCA).Calcium scoring was estimated on plain scans.The diagnostic accuracy of MSCT to detect significant lesions(≥50%)was evaluated referring to quantitative coronary angiography(QCA).The impacts of coronary artery calcium on the diagnostic accuracy was analyzed.Results A total of 797 segments were diagnositc.The overall sensitivity,specificity,positive predictive value and negative predictive value of 64-MSCT were 96%(174/182),98%(601/615),93% (174/188),and 99%(601/609),respectively.When calcium score ≥100(Agatston score),the specificity and positive predictive value of 64-MSCT was 63%(12/19)and 81%(30/37), respectively.Conclusion In patients with no or mild coronary calcification,the 64-MSCT coronary angiography had a reliable detection of coronary artery stenoses.But severe calcification in coronary artery may degrade diagnostic specificity and positive predictive value of MSCT coronary angiography.
