大螺距双源CT冠脉成像和冠状动脉造影的对比研究High-pitch spiral acquisition daul-source CT in coronary artery disease:comparison with coronary angiography
赵瑞平,郝志茹
摘要(Abstract):
目的探讨第二代双源CT对冠状动脉狭窄的准确性的诊断价值。方法 60例临床可疑或已知冠心病患者行双源CT冠状动脉成像(CTCA)检查,入选采用Flash spiral模式扫描并于10天内行冠状动脉造影(CAG)检查,以CAG结果作为金标准,评价双源CT对冠状动脉狭窄程度的的敏感度、特异度、阳性预测值及阴性预测值,评价第二代双源CT对冠状动脉狭窄的诊断价值。结果 60例患者显示冠状动脉240支共740节段,以冠状动脉造影为参考标准,基于节段水平分析,CTCA诊断冠状动脉狭窄的敏感性、特异性、阳性预测值、阴性预测值及准确率分别为84.4%、97.0%、86.4%、96.50%、94.7%;基于血管分析,CTCA诊断冠状动脉狭窄的敏感性、特异性、阳性预测值、阴性预测值及准确率分别为85.5%、92.3%、90.4%、88.2%、89.2%。结论大螺距双源CT Flash spiral模式作为一项新的成像方法,检出冠状动脉狭窄的准确率较高,作为冠心病的一种无创筛查手段有较高的临床应用价值。
关键词(KeyWords): 体层摄影术,螺旋计算机;冠状动脉狭窄;冠状血管造影
基金项目(Foundation):
作者(Author): 赵瑞平,郝志茹
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