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目的分析研究磁共振扩散加权成像(DWI)技术在超急性期脑梗死中的应用效果。方法 84例发病6 h内疑似脑梗死患者,于CT检查下排除急性脑出血后,给予患者常规的DWI扫描以及磁共振成像(MRI)扫描检查,分析对比两种方法的检查结果。结果经DWI诊断检查84例超急性期脑梗死患者显示高信号,弥散系数图像为低信号,检出率100.0%。32例继发脑梗死患者采用MRI常规序列诊断仅可见有陈旧性梗死病灶,而采用DWI则可清晰发现新梗死病灶,DWI全方向能更清晰诊断梗死病灶。结论 DWI技术用于诊断超急性期脑梗死,应用价值显著。
Objective To analyze the effect of diffusion weighted imaging (DWI) in hyperacute cerebral infarction. Methods Eighty-four patients with suspected cerebral infarction within 6 hours after onset of acute cerebral hemorrhage were excluded from the CT scan. The patients underwent routine DWI and MRI scans. The results of the two methods were analyzed and compared. Results In 84 patients with hyperacute cerebral infarction, high signal and low coefficient of diffusion coefficient were detected by DWI. The detection rate was 100.0%. 32 cases of patients with secondary cerebral infarction using MRI conventional sequence diagnosis of only visible old infarct lesions, and the use of DWI can be clearly found in new infarction lesions, DWI can be more clear direction of infarction lesions in all directions. Conclusion The DWI technique is of value in the diagnosis of hyperacute cerebral infarction.