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低场磁共振弥散加权成像在超急性和急性脑梗塞中的应用 被引量:6

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摘要 目的:评价低场强磁共振弥散加权成像(DWI)在超急性和急性脑梗塞的应用价值。材料与方法:回顾分析46例经临床最后确诊断为脑梗塞的患者的影像资料,分析常规MRI成像与DWI成像影像的诊断阳性率,分析超急性期和急性期DWI图像病灶的信号强度。结果:超急性期常规MRI诊断的阳性率为22.2%,DWI的阳性率为88.9%,急性期常规MRI诊断的阳性率为75.7%,DWI的阳性率为94.6%。DWI共诊断新梗塞病灶47个,7个呈稍高信号,40个呈高信号,低场强磁共振DWI具有很高的敏感性和特异性。结论:利用低场磁共振实现的弥散加权成像技术,可以为超急性期和急性期脑梗塞的早期诊断提供重要帮助。
出处 《现代医用影像学》 2011年第3期190-192,共3页 Modern Medical Imageology
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