磁共振成像对急性期非外伤性颅内出血的诊断价值

Value of magnetic resonance imaging in diagnosing acute non-traumatic intracranial hemorrhage

目的:评价磁共振成像(MRI)在诊断急性非外伤性颅内出血中的价值。方法:对40名患者行磁共振T2-FLAIR、GRE-T2*WI、DWI序列的扫描和计算机断层扫描(CT)平扫,比较检查效果。结果:脑内出血在GRE-T2*WI上表现为片状低信号,DWI上呈低或高低混杂信号。T2-FLAIR上表现为片状或环形稍高信号;蛛网膜下腔出血在GRE-T2*WI上表现为沿脑沟分布的低信号,在T2-FLAIR上表现为沿脑沟分布的高信号带。多序列组合MRI诊断敏感性高于CT。结论:多序列组合MRI可以准确诊断急性期非外伤性颅内出血,使急性期脑卒中患者的MRI一站式诊断成为可能。

Objective： To assess the value of magnatic resonance imaging（MRI） in diagnosing acute non-traumatic incranial hemorrhage.Methods： MRI T2-FLAIR,GRE-T2＊WI and DWI scanning were employed to 40 cases with intracranial hemorrhage and the results were compared.Results： Intracranial hemorrhage showed flake low signal in GRE-T2＊WI,low or mixed signal in DWI,flake or ring higher signal in T2-FLAIR,and low signal along cortical sulciin in GRE-T2＊WI.Subarachnoid hemorrhage displayed low signal along cortical sulciin in GRE-T2＊WI,and high signal in T2-FLAIR.Multi-series MRI was more sensitive than CT.Conclusions： Multi-series MRI can make accurate diagnosis of acute non-traumatic intracranial hemorrhage,and make the one-stop MRI diagnosis for acute stroke possible.