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双源CT对冠状动脉各类斑块与管腔狭窄诊断准确性的研究 被引量:4

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摘要 目的评估双源CT(DSCT)对冠状动脉各类不同性质斑块的判断及其所致管腔狭窄诊断准确性,并与常规冠状动脉造影(CAG)对照。方法选择行冠状动脉CT血管成像(CTA)检查前后2周内进行了CAG检查的41例患者进行对照分析。将冠状动脉斑块分为钙化斑块、非钙化斑块及混合斑块三类,按冠状动脉15分段标准,与CAG结果进行对照分析,以评估DSCT对于冠状动脉不同性质斑块所致狭窄的敏感性、特异性、阳性预测值、阴性预测值及准确性。结果 41例患者共显示605个节段,其中图像质量1~4级共586个节段为可评估节段,DSCT检查可评估率为96.9%。DSCT发现冠状动脉共192节段存在斑块,占32.8%;其中钙化斑块123个节段,混合斑块49个节段,非钙化斑块为20个节段。以冠状动脉节段为判断标准,DSCT在显示冠状动脉节段病变方面其总体敏感性为91.1%(173/190),特异性为95.3%(387/406),阳性预测值为90.1%(173/192),阴性预测值为95.8%(387/404)。发现各类斑块所致冠状动脉狭窄的准确率分别为钙化斑块88.6%(109/123),混合斑块93.9%(46/49),非钙化斑块90.0%(18/20),总诊断准确率为95.6%(560/586)。结论 DSCT对于冠状动脉不同性质斑块的判断与其所致管腔狭窄诊断有较高的准确性,为临床冠心病的诊治提供重要价值。
机构地区 宁波市第二医院
出处 《现代实用医学》 2012年第8期923-925,F0004,共4页 Modern Practical Medicine
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参考文献5

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二级参考文献21

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