摘要
目的:探讨CT平扫、CT血流灌注成像(CTP)、磁共振弥散加权成像(DWI)及螺旋CT血管造影(CTA)对缺血性脑血管病的比较影像学价值,找出缺血性脑血管病的合理影像检查路径。方法:30例缺血性脑血管病患者经CT、CTA、CTP、DWI检查。结果:30例患者中,12例CT平扫显示责任病灶,27例CTA显示责任血管。DWI与CTP对缺血性脑血管病的敏感性分别为73.3%,83.3%,阳性预测值分别为95.7%,92.6%,两者无显著性差异。结论:CT平扫是常规筛选检查,CTP和DWI是发现脑组织缺血改变的敏感方法,CTA适用于确定责任血管。CTP和DWI、CTA检查可根据病人经济条件及临床表现灵活选择。
Objective： To explore the comparative value of CT plain scan, CT cerebral perfusion imaging （CTP）, diffusion-weighted imaging （DWI） and MSCT angiography （CTA） in the acute ischemic cerebrovascular disease, and to find a reasonable procedure of imaging examination for acute ischemic cerebrovascular disease. Methods： Examinations of conventional CT, CT cerebral perfusion imaging, diffusion-weighted imaging and MSCT angiography were underwent in 30 cases with acute ischemic cerebrovascular disease. Results： In the 30 cases, plain CT showed the resulting ischemia and infarction in 12 cases. The sensitivity of DWI and CTP for diagnosing acute ischemic cerebrovascular disease were 73.3%, 83.3%; The predictive value of positive cases of DWI and CTP were 95.7%, 92.6%. Differences in sensitivity and the predictive value of positive cases were not statistically significant among DWI and CTE CTA demonstrated the involved cerebral arteries for patients of acute ischemic cerebrovascular disease in 27 cases. Conclusion： Conventional CT is the first method of case selection in diagnose in clinic. CTP and DWI are both highly sensitive methods for detecting acute brain ischemia. CTA is helpful in finding the involved cerebral arteries. According to patients＇ clinical manifestation and economy condition, we cleverly choose these methods.
出处
《CT理论与应用研究（中英文）》
2011年第4期523-530,共8页
Computerized Tomography Theory and Applications
