标题：扩散加权成像在急性脑干梗塞中的诊断应用
作者：黄乐生，刘金丰，肖梦强，彭广宇，胡小露
(广东省中医院珠海医院影像科，广东 珠海 519015)
卷次：
2014年25卷18期
【摘要】 目的 探讨扩散加权成像在超急性及急性脑干梗塞中的诊断价值。方法 采用单次激发平面
回波DWI序列和常规磁共振对 43例急性及超急性脑干梗塞患者进行检查，其中超急性脑干梗塞患者 4例，
急性脑干梗塞 39例；脑桥梗塞 35例，中脑梗塞 3例，延髓梗塞 5例。观察各期患者在扩散加权成像及常规磁
共振中 T2WI、FLAIR的信号变化。结果 在超急性脑干梗塞患者中DWI信号增高，而 T2WI、FLAIR信号未
见异常。在急性脑干梗塞患者中DWI、T2WI、FLAIR信号增高，但DWI信号范围较 T2WI、FLAIR显示更大。
结论 DWI较常规磁共振序列敏感，DWI有助于诊断超急性脑干梗塞的检出率，当怀疑急性脑干梗塞尤其是超
急性脑干梗塞时更应行DWI检查。
【关键词】 脑干梗塞；扩散加权成像；磁共振
【中图分类号】 R743.33 【文献标识码】 A 【文章编号】 1003—6350（2014）18—2703—02
Diagnostic value of diffusion weighted imaging in acute brainstem infarction.
HUANG Le-sheng, LIU Jin-feng,
XIAO Meng-qiang, PENG Guang-yu, HU Xiao-lu. Department of Medical Imaging, Zhuhai Branch Guangdong
Provincial Hospital of the Traditional Chinese Medicine, Zhuhai 519015, Guangdong, CHINA
【Abstract】 Objective To explore the diagnostic value of diffusion weighted imaging in hyperacute and
acute brainstem infarction. Methods Single shot echo planar DWI sequence and conventional MRI were examined
in 43 patients with acute and peracute brainstem infarction, including 4 patients with peracute brainstem infarction, 39
with acute brainstem infarction, 35 with pontine infarction, 3 with brain infarction and 5 with medullary infarction.
The patients were observed in the signal diffusion weighted imaging and magnetic resonance imaging in T2WI, FLAIR
realization. Results Increased DWI signal was observed in the patients of peracute brainstem infarction, with no ab-
normal signal in T2WI, FLAIR. Elevated DWI, T2WI, FLAIR signals were observed in the patients of acute brainstem
infarction, and the DWI signal range was greater than that of T2WI, FLAIR. Conclusion DWI is more sensitive than
conventional magnetic resonance. DWI positive rates contribute to the diagnosis of super acute brain stem infarction.
Suspected patients of acute brainstem infarction or peracute brainstem infarction should especially be examined by
DWI, to improve the basis for clinical therapy and the prognosis of the patients.
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