| 刘兆玉,韩家兴,畅智慧,王传卓,马羽佳,单明.256层螺旋CT血管造影诊断冠状动脉狭窄——与经导管冠状动脉造影术对比[J].中国医学影像技术,2010,26(10):1892~1895 |
| 256层螺旋CT血管造影诊断冠状动脉狭窄——与经导管冠状动脉造影术对比 |
| Diagnostic accuracy of 256-slice CT for detecting coronary artery stenosis: Comparison with transcatheter coronary angiography |
| 投稿时间：2010-03-22 修订日期：2010-07-26 |
| DOI： |
| 中文关键词: 体层摄影术,X线计算机 冠状血管造影术 冠状动脉狭窄 |
| 英文关键词:Tomography, X-ray computed Coronary angiography Coronary stenosis |
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| 中文摘要: |
| 目的 初步探讨256层螺旋CT动脉造影术(CTA)在诊断冠状动脉狭窄中的价值。方法 回顾性分析32例临床初诊疑为冠心病患者的256层CTA检查结果,并与经导管冠状动脉造影术(CCA)结果进行对照。所有患者CTA检查前均未服用β受体阻滞剂。结果 32例患者中,冠状动脉直径≥2 mm的419个节段中,CT图像能满足诊断要求的为393个节段(93.79%)。393个节段中,256层CTA显示中度以上狭窄(≥50%)的准确率、敏感度、特异度和阳性预测值、阴性预测值分别为95.67%、80.70%、98.21%、88.46%、96.77%;显示重度狭窄(≥75%)的准确率、敏感度、特异度、阳性预测值、阴性预测值分别为96.69%、75.00%、98.88%、87.10%、97.51%。对于中度以上以及重度狭窄的诊断,256层CTA与CCA的差异均无统计学意义。结论 在未服用β受体阻滞剂的前提下,256层CTA对冠状动脉中、重度狭窄的初步筛选和诊断方面,与CCA无明显差别。 |
| 英文摘要: |
| Objective To evaluate the accuracy of 256-slice spiral CT angiography (CTA) in detecting coronary artery stenosis. Methods Thirty-two patients suspected of coronary heart disease on first visit underwent 256-slice CTA without β receptor blocker. CTA results was retrospectively analyzed and compared with those of catheter coronary angiography (CCA). Results In 32 patients, there were 419 segments with diameter of coronary artery ≥2 mm. CTA images of 393 segments (393/419, 93.79%) could meet the lumen evaluation. The accuracy, sensitivity, specificity, positive and negative predictive value of CTA was 95.67%, 80.70%, 98.21%, 88.46% and 96.77% in showing moderate and severe stenosis (≥50%) of 393 segments, while was 96.69%, 75.00%, 98.88%, 87.10% and 97.51% in showing severe stenosis (≥75%). No difference was found between 256-slice CTA and CCA in diagnosing stenosis ≥50% or ≥75%. Conclusion For the patients without β receptor blocker, 256-slice CTA has no obvious difference compared with CCA in screening for moderate and high coronary artery stenosis. |
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