摘要
目的研究128层螺旋CT冠脉成像对冠心病的冠状动脉狭窄,特别是细小分支狭窄的临床诊断价值和准确度。方法以传统X线冠状动脉造影(CAG)为金标准,与同期2~7d内行64排128层螺旋CT的图像进行对比研究。结果本研究中CT图像能够满足冠状动脉管腔评价的节段占96.50%,CT图像满足诊断要求的节段中,常规冠状动脉造影共发现中度和中度以上狭窄120节段,其中重度狭窄34节段。本组病例中以CAG作为金指标,显示重度狭窄的敏感度和特异度分别为99.8%和96.6%,阳性预测值和阴性预测值分别为99.8%和96.5%。结论对于达到扫描评价条件的冠脉图像,128层螺旋CT可作为冠心病临床诊断及介入治疗的一种无创筛选方法;能较可靠地排除临床表现不明确的冠心病患者,尤其是评价左主干、左前降支和回旋支的近端准确度非常高。
Objective To determine the value of 128-slice coronary CT angiogram (CTA) in detecting coronary artery stenosis. Methods 128-slice coronary CTA was compared with catheter coronary angiogram (CAG) performed within 2-7 days. Results 96.50% of coronary artery segments were evaluable on CTA. Compared to the moderate and severe stenosis in 120 segments including 34 segments with high-grade stenosis on CAG, the sensitivity, specificity, positive predictive value and negative predictive value of CTA were 99.8, 96.6, 99.80 and 96.5% respectively. Conclusion CTA has high sensitivity, specificity and negative predictive value in diagnosing coronary artery stenosis, especially in the left main, left anterior descending and proximal circumflex coronary arteries.
出处
《影像诊断与介入放射学》
2010年第4期209-211,共3页
Diagnostic Imaging & Interventional Radiology
关键词
冠心病
体层摄影术
X线计算机
冠状动脉造影术
Coronary heart disease
Tomography
x-ray lomputed
Coronary angiography
Tomography