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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 investigate the comparative imaging value of CT scan, CT perfusion imaging (CTP), magnetic resonance diffusion-weighted imaging (DWI) and spiral CT angiography (CTA) on ischemic cerebrovascular disease Reasonable pathological examination of cerebrovascular disease. Methods: 30 cases of ischemic cerebrovascular disease by CT, CTA, CTP, DWI examination. Results: Of the 30 patients, CT scan of 12 cases showed responsibility lesion and 27 cases of CTA showed responsible vessel. The sensitivity of DWI and CTP to ischemic cerebrovascular disease were 73.3% and 83.3% respectively, and the positive predictive value was 95.7% and 92.6% respectively. There was no significant difference between the two. Conclusion: CT scan is a routine screening test, CTP and DWI is a sensitive method to detect changes in brain ischemia, CTA is suitable for determining the responsibility of blood vessels. CTP and DWI, CTA examination according to the patient’s economic conditions and clinical performance of flexible choice.