320排动态容积CT冠状动脉成像与冠状动脉造影诊断冠状动脉病变的初步对照研究  

Comparative Study between 320--slice Dynamic Volume CT Coronary Angiography and Conventional Coronary Angiography in Diagnosing Coronary Artery Disease：Initial Experience

作　　者：丁凯[1] 沈桂权[1] 

机构地区：[1]贵阳医学院附属医院影像科,贵州贵阳550004

出　　处：《实用放射学杂志》2011年第2期191-194,210,共5页Journal of Practical Radiology

摘　　要：目的探讨320排动态容积CT冠状动脉成像（CTA）质量及其对冠状动脉疾病的诊断价值。方法回顾性分析40例经320排动态容积CTA和冠状动脉造影（coronaryangiography，CAG）检查拟诊为冠心病的图像资料。结果40例520个冠状动脉节段中（每位患者分13个节段），320排动态容积CT图像质量1、2、3级分别为290（55．8％）、194（37．3％）、36（6．9％）个节段。其中1、2级即优良率共484（484／520、93．1％）个节段，能满足临床诊断；而36（36／520，6．9％）个节段因运动伪影或严重钙化无法对管腔进行评价。以CAG为“金标准”，320排动态容积CT发现冠状动脉狭窄的敏感性90．2％，特异性97．5％，阳性预测值92．4％，阴性预测值96．7％。320排动态容积CT对于冠状动脉狭窄检出的准确率为95．7％。结论CTA对冠状动脉疾病的诊断十分准确，可作为一种简便、易行、安全可靠的无创性筛查冠心病的有效方法。Objective To assessed the image quality and diagnostic value of 320--slice dynamic volume CT angiography（CTA） in coronary artery diseases. Methods 40 patients with suspected coronary heart disease underwent both 320-- slice dynamic volume CTA and coronary angiography（CAG）. Imaging data were retrospectively analysed. Results In 520 coronary artery segments（13 coronary segments for each patient）,the image quality of coronary arteriae showed by 320--slice dynamic volume CT in 1,2 and 3 class were 290 （ 55.8 % ）, 194 （ 37.3 % ） and 36 （ 6.9 % ） segments, respectively. 1 and 2 class image quality totally involved 484 （ 484/ 520,93.1% ） segments, that could be satisfactory for clinical diagnosis, whereas 36 （ 36/520,6.9 ~ ） segments could not be sufficiently evaluated because of the motion artifacts and/or severe calcifications. Taking CAG as the gold standard diagnostic technique for coro- nary heart disease , The sensitivity, specificity, positive predictive value and negative predictive value in detecting coronary artery stenosis with 320-- slice dynamic volume CT were 90.2% ,97.5% ,92.4% and 96.7% ,respectively. The accurate rate of 320--slice dy- namic volume CT in detecting coronary artery stenosis was 95.7 %. Conclusion 320--slice dynamic volume CTA is a simple,con- venient,safe and reliable,non--invasive effective method in diagnosis of coronary heart disease.

关 键 词：心脏 体层摄影术 X线计算机 冠状动脉疾病 冠状动脉造影 

分 类 号：R543.3[医药卫生—心血管疾病] R814.42[医药卫生—内科学]