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mi san cheng xiang he xue guan cheng xiang zai ji xing nao geng si zhen duan zhong de ying yong jia zhi
Author(s): 
Pages: 374-375
Year: Issue:  3
Journal: Research of Traditional Chinese Medicine

Keyword:  弥散加权成像磁共振血管成像急性脑梗死;
Abstract: 目的探讨磁共振弥散成像和血管成像在急性脑梗死诊断中的应用价值。方法154例急性脑梗死病人行常规MRI检查,再行弥散加权成像(DWI)及TOF3D脑血管成像检查。结果69例发病时间<2h的病人,在T1WI和T2WI均为正常,DWI像呈稍高信号影;85例发病时间2h6h病人,T2WI呈高信号,DWI呈异常高信号。在磁共振脑血管成像(MRA)中,31例表现为正常;20例表现为主支血管影及其分支缺失;35例表现为脑血管影局限性狭窄、稀疏;68例表现为弥漫性脑血管分支影稀疏、减少,呈枯枝状,且常伴有主血管影粗细不均匀及狭窄。结论DWI比常规T2WI对诊断急性脑梗死有较高的敏感性和特异性,并且能发现常规T2WI像不能发现的超早期脑梗死。脑血管成像在与DWI及T2WI像结合观察时,可对病人脑血管基本状态做出初步评价,但不宜单独用于临床。
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