摘要
目的评价不同影像学检查技术对颅外段颈动脉狭窄的评估价值。方法对23例临床怀疑颈动脉狭窄的患者行彩色多普勒超声(US)、对比增强磁共振(CEMRA)及DSA检查,以颈总动脉法(CC法)计算狭窄率。结果以DSA检查结果为金标准,超声诊断颈动脉狭窄的敏感性为93.75%,特异性64.29%;CEMRA诊断的敏感性96.88%,特异性71.43%。结论超声检查的敏感性较高、无创伤,适用于人群初选检查。CEMRA检查的敏感性、特异性均高于超声,一次检查可显示颈动脉全程。DSA检查仍为评价颈动脉狭窄的金标准,须有机结合超声、CEMRA和DSA检查,以全方位了解狭窄的颈动脉,制定合理的治疗方法。
Purpose To evaluate the value of colour Doppler ultrasound ,contrast-enhanced MRA and DSA in assessment of extracranial carotid stenosis. Methods Twenty-three patients with clinical suspected carotid stenosis were examined by US,CEMRA and DSA. The percentage of stenosis was calculated by using common carotid method （CC）. Results We compared the findings of US and CEMRA with the standard method of DSA, US demonstrated a sensitivity of 93.75% and specificity of 64.29%; CEMRA demonstrated a sensitivity of 96.88% and specificity of 71.43%. Conclusion US is a sensitive and noninvasive method, which is suitable for initial detection. The sensitivity and specificity of CEMRA are higher than that of US by showing the whole carotid artery. DSA is still the ＂gold standard＂ in the diagnosis of carotid stenosis. A combination of colour Doppler ultrasound,CEMRA and DSA provides details of stenostic carotid which is helpful to clinical management.
出处
《上海医学影像》
2006年第1期27-29,共3页
Shanghai Medical Imaging
关键词
颅外段颈动脉
狭窄
比较影像学
Extracranial carotid
Stenosis
Comparative imageology
