超声、磁共振成像及CT血管成像诊断颈动脉粥样硬化的临床研究

目的探究超声（CDFI）、磁共振成像（MRI）及CT血管成像（CTA）诊断颈动脉粥样硬化的临床指标。方法对我院2010年1月～2013年6月收治的185例颈动脉粥样硬化患者进行回顾分析，按照其诊断方式分为CDFI组（n=62）、MRI组（n=60）及CTA组（n=63），对比各组诊断效果。结果MRI组诊断灵敏度及特异性均较高，分别为98．2％和97．6％．CDFI组诊断灵敏度为95.4％，特异性为94．2％，CTA组分别为90．8％和92．1％，MRI组诊断灵敏度、特异性、符合度等指标均显著高于其他两组；多数纤维帽在T1W1、PDW1分辨率较低，而T2W1、3D—TOF及增强扫描分辨率较高，分别为78．3％、60．0％及86．7％，较容易分辨。结论超声、磁共振成像及CT血管成像对颈动脉粥样硬化均有较好的诊断效果。且各有优势，建议在条件允许的情况下行三种检查方式联合确诊，而设备不足时，可仅采取MRI增强扫描，亦能够有效指示患者纤维帽状态，为确诊颈动脉粥样硬化提供指导。

Clinical study of ultrasound, magnetic resonance imaging and CT angiog- raphy in the diagnosis of carotid atherosclerosis

Objective To explore ultrasound （CDFI）, magnetic resonance imaging （MRI） and CT angiography （CTA） clinical index in the diagnosis of carotid atberosclerosis. Methods Retrospective analysis of 185 cases of carotid atherosclerosis in patients of our hospital in 2010 January-2013 year in June, divided into CDFI groups according to diagnosis （n = 62）, MRI group （n = 60） and CTA group （n = 63）, contrast group diagnosis effect. Results In MRI group, diagnostic sensitivity and specificity were high, respectively 98.2% and 97.6%, group CDFI diagnostic sensi- tivity was 95.4%, specificity was 94.2%, CTA group were 90.8% and 92.1%, group MRI diagnostic sensitivity, specificity, accuracy were significantly higher than the other two groups; most of the fibrous cap in T1W1, PDW1 low resolution, while T2W1, 3D-TOF and enhanced scanning resolution was higher, respectively 78.3%, 60.0% and 86.7%, relatively easy to distinguish. Conclusion Ultrasound, magnetic resonance imaging and CT angiography in the diagnosis of carotid atherosclerosis has good effect, and each have advantages, the proposed joint diagnosed in condi- tions permitting downward three inspection way, while the equipment is insufficient, can only take the MRI enhance- ment scanning, also can effectively indicate the state of patients with fibrous cap, provide guidance for diagnosis of carotid atherosclerosis.