摘要
目的:评价磁共振成像(MRI)对陈旧性心肌梗死(old myocardial infarction,OMI)患者心肌活性的诊断价值。方法:分析13例OMI患者的增强磁共振(contrast enhanced magnetic resonance ima-ging,ceMRI)延迟强化透壁率、冠状动脉造影TIMI分级结果和心肌双核素显像(single-photon emissioncomputed tomography,SPECT)心肌存活情况。将13例OMI患者ceMRI透壁率、冠状动脉造影TIMI分级和SPECT心肌存活情况进行受试者工作曲线(ROC)分析。结果:ceMRI透壁率曲线下面积为0.953,冠状动脉造影TIMI分级曲线下面积为0.935,ceMRI透壁率与金标准心肌双核素显像相比,透壁率在26%～50%诊断存活心肌的灵敏度为88.9%,特异度为82.7%;透壁率在51%～75%诊断存活心肌的灵敏度为74.1%,特异度为98.7%,与心肌双核素显像相比其诊断的准确性较高。结论:增强MRI清晰显示心肌梗死的位置、范围和程度。ceMRI透壁率诊断存活心肌的准确性较高。
Objective：The aim of this study was to investigate the feasibility and accuracy of the ceMRI to detect the viable myocardium.Methods：In 13 OMI patients analyze ceMRI,TIMI results of coronary angiography and myocardial viability score of SPECT.Determining the diagnostic accuracy of the ceMRI and TIMI by receiver operating characteristic curve（ROC） analysis.Results：The area under the curve（AUC） of transmural ratio with ceMRI was 0.953 and AUC of TIMI was 0.935.The sensitivity and specificity of transmural ratio 26%-50% to detect viable myocardium were 88.9% and 82.7% respectively.The sensitivity and specificity of transmural ratio 51%-75% to detect viable myocardium were 74.1% and 98.7% respectively.Conclusion：Contrast-enhanced MRI can clearly display the location,dimension and extention of myocardial infarction.The accuracy of the ceMRI to detect viable myocardium was very high.
出处
《心肺血管病杂志》
CAS
2011年第6期511-513,共3页
Journal of Cardiovascular and Pulmonary Diseases
关键词
增强磁共振
透壁率
心肌双核素显像
心脏疾病
Contrast-enhanced MRI
Transmural ratio
Myocardial metabolic single-photon emission computed tomography
Heart disease
