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目的与组织学对照,评价64层螺旋CT和1.5TMRI在显示离体冠状动脉粥样硬化斑块成分的作用。材料与方法对13例尸检患者的心脏,行冠状动脉前降支近段CT及MRI检查,并与病理学相对照。采用诊断试验分析CT、MRI诊断各型斑块的敏感性和特异性,评价CT、MRI对斑块分类的准确性。结果94个CT、MRI层面可与相应的组织学层面相对应。CT对于各型斑块分类的敏感性和特异性分别为:Ⅰ～Ⅱ型,0%和100%;Ⅲ型,0%和100%;Ⅳ～Ⅴ型,92.3%和86.8%;Ⅵ型,0%和100%;Ⅶ型,100%和100%;Ⅷ型,100%和97.8%。MRI对于各型斑块分类的敏感性和特异性分别为:Ⅰ～Ⅱ型,60%和100%;Ⅲ型,80%和100%;Ⅳ～Ⅴ型,96.2%和86.8%;Ⅵ型,100%和98.9%;Ⅶ型,93%和100%;Ⅷ型,100%和98.9%。结论CT、MRI可显示冠状动脉粥样硬化斑块的特点,对斑块进行分型MRI优于CT。
Purpose and histological control, evaluation of 64-slice spiral CT and 1.5 TMRI in vitro coronary atherosclerotic plaque display role. Materials and Methods Thirteen cases of autopsy patients were examined with CT and MRI in the proximal anterior descending coronary artery and compared with the pathology. Diagnostic tests were used to analyze the sensitivity and specificity of CT and MRI in the diagnosis of various plaques. The accuracy of CT and MRI in the classification of plaques was evaluated. Results 94 CT, MRI level corresponding to the corresponding histological level. The sensitivity and specificity of CT for each type of plaque were: Ⅰ ~ Ⅱ, 0% and 100%; Ⅲ, 0% and 100%; Ⅳ ~ Ⅴ, 92.3% and 86.8% 0% and 100%; Type VII, 100% and 100%; Type VIII, 100% and 97.8%. The sensitivity and specificity of MRI for each type of plaque were Ⅰ ~ Ⅱ, 60% and 100%, Ⅲ, 80% and 100%, Ⅳ ~ Ⅴ, 96.2% and 86.8% 100% and 98.9%; Type VII, 93% and 100%; Type VIII, 100% and 98.9%. Conclusion CT and MRI can show the characteristics of coronary atherosclerotic plaque, and the classification of plaques is better than CT.