磁敏感成像对颅内亚急性出血诊断价值的临床分析  

Clinical analysis on magnetic susceptibility weighted imaging in diagnosing intracranial sub-acute hemorrhage

作　　者：程颜梅 刘伟[1] 

机构地区：[1]天津市泰达医院神经内科,300450

出　　处：《齐齐哈尔医学院学报》2014年第11期1599-1600,共2页Journal of Qiqihar Medical University

摘　　要：目的评价磁敏感成像对颅内亚急性出血的临床应用价值。方法搜集亚急性(>8天<4周)颅内出血17例,行头CT检查、常规核磁共振成像(MRI)及磁敏感成像(SWI)检查,MRI序列有T1加权成像(T1WI)、T2加权成像(T2WI)、水抑制成像(FLAIR)、弥散加权成像(DWI)、磁敏感成像(SWI),观察信号变化。结果 17例均为亚急性期小灶出血,临床症状轻微,亚急性期头CT均未见异常,核磁共振成像见短等长混杂T1信号,长短混杂T2信号,FIAIR与T2信号类似,DWI为高低或等低混杂信号,而SWI均为类圆形低信号,偶见中心小等信号区。结论颅内亚急性期出血的核磁共振表现较为复杂,T1WI与T2WI可以反映脑出血的病理过程,但影像表现较为复杂,有时与占位及特殊感染不易区分,SWI较常规核磁共振信号敏感且特异性强,能发现更多亚临床病灶,因此脑出血亚急性期影像学检查首选SWI成像,SWI成像的应用对脑血管病的诊断治疗提供了有益的补充,具有较高的临床应用价值。Objective To evaluate the clinical application value of magnetic susceptibility weighted imaging in diagnosing intracerebral sub - acute hemorrhage. Methods 17 patients suffered from intraeerebral sub-acute hemorrhage （intracerebral hemorrhage more than 8days but less than 4 weeks ）were enrolled this study. All of them received the examination including head CT, routine MRI and SWI. MRI sequence include T1WI, T2WI FLAIR, DWI and SWI. Observed the signal changes.Results All the 17 patients were diagnosed as focal sub - acute hemorrhage, clinical symptoms were slight, but didni found abnormal in head CT. MRI show short length of hybrid T1 signal and long length of hybrid T2 signal, FLAIR signal was similar with T2WI, DWI was mixed high and low or low signal, SWI was oval low signal, sometimes could found small signal region in the center . Conclusions The expression of MRI about intracerebral sub - acute hemorrhage is complex, T1WI and T2WI can reflect the pathological process of cerebral hemorrhage, but imaging findings are complex, sometimes are not easy to distinguish between occupying and special infection. Signal of SWI is more sensitivity and specificity than routine MRI, can find more subclinical lesions, so SWI imaging can be a first choice for diagnosing intracerebral sub - acute hemorrhage, SWI can provide beneficial supplement for diagnose and treatment of cerebral vascular disease.

关 键 词：核磁共振成像 磁敏感加权成像 颅内亚急性期出血 脑血管病 

分 类 号：R741[医药卫生—神经病学与精神病学]