论文部分内容阅读
目的探讨GE128层宝石能谱螺旋CT冠状动脉血管成像(CTA)检查对冠状动脉血管狭窄的临床诊断及应用价值。方法选取50例疑似冠状动脉血管狭窄患者进行回顾性综合分析,CTA检查数据信息影像资料;并与选择性冠状动脉血管造影检查资料(SCA)进行冠状动脉血管狭窄程度的比较,并分析CTA检查诊断结果的敏感性、特异性、阳性预测值、阴性预测值和准确性,并综合分析图像质量的影响因素。结果可评估冠状动脉血管共160支,CTA检查冠状动脉狭窄的敏感性、特异性、阳性预测值、阴性预测值和准确性分别为:无狭窄为95.3%、97.1%、97.6%、94.3%、96.1%;轻度程度狭窄为为66.7%、96.7%、70.5%、95.3%、86.4%;中度程度狭窄为77.8%、94.5%、75.0%、95.2%、91.6%;重度程度狭窄率为83.3%、94.6%、74.1%、96.8%和92.9%。影响CT影像数据质量的因素,包括患者运动伪影、血管壁钙化斑块、心脏高心率等相关因素。结论 CTA检查与SCA检查之间差异无显著性,CTA检查在临床应用上有更多的技术性优势。
Objective To investigate the clinical value of GE128 gemcitation spiral CT coronary angiography (CTA) in the diagnosis of coronary artery stenosis. Methods Fifty patients with suspected coronary artery stenosis were retrospectively analyzed and analyzed by CTA. The data of coronary artery stenosis were compared with that of selective coronary angiography (SCA), and the diagnostic value of CTA was analyzed The sensitivity, specificity, positive predictive value, negative predictive value and accuracy of the results, and comprehensive analysis of the influencing factors of image quality. Results A total of 160 coronary arteries were evaluated. The sensitivity, specificity, positive predictive value, negative predictive value and accuracy of CTA were 95.3%, 97.1%, 97.6%, 94.3%, respectively. 96.1%, 96.7%, 70.5%, 95.3% and 86.4% respectively. The moderate degree of stenosis was 77.8%, 94.5%, 75.0%, 95.2% and 91.6% respectively. The stenosis rate of severe degree was 83.3 %, 94.6%, 74.1%, 96.8% and 92.9%. Factors affecting CT image data quality include patient motion artifacts, vascular calcification plaque, heart hypercardia and other related factors. Conclusion There is no significant difference between CTA and SCA, and CTA has more technical advantages in clinical application.