MRI常规序列、SWI序列及DWI在脑外伤微出血患者诊断中的应用研究

目的 探究MRI常规序列、SWI序列以及DWI序列在脑外伤微出血患者诊断中的应用价值.方法 选取2019年8月～2020年4月我院收治的71例脑外伤微出血患者作为观察对象,所有患者在入院3天后行头部MRI常规序列(T1WI、T2WI、T2FLAIR)、扩散加权成像(DWI)序列及磁敏感加权成像(SWI)序列检查.观察脑...

The application of conventional MR sequence,SWI sequence and DWI in the diagnosis of patients with cerebral trauma microbleeds

Objective To research the application of conventional MR sequence,SWI sequence and DWI in the diagnosis of patients with cerebral trauma microbleeds.Methods 71 patients with cerebral trauma microbleeds who admitted to our hospital from August 2019 to April 2020 were selected as the research objects.All patients underwent routine head MRI sequences(T₁WI,T₂WI,T₂FLAIR),diffusion weighted imaging(DWI)and magnetic susceptibility weighted imaging(SWI)three days after admission.We observed the imaging manifestations of microbleeds in different scanning sequences and compared the detection rate of microbleeds in different scanning sequences.Results Most of the micro hemorrhagic foci showed patchy,strip like and low signal in T₁WI sequence,slightly high signal or equal signal in T₂WI and T₂FLAIR sequence,and low signal or equal signal in DWI sequence.In SWI sequence,most of the micro hemorrhagic foci were dot like,patchy,circular or circular low signal,compared with conventional MR sequences such as T₁WI,T₂WI,T₂FLAIR and DWI sequences,SWI showed more microbleeds,clearer margins and larger lesions.A total of 169 micro bleeding lesions were detected in 71 patients,78 lesions were detected by T₁WI sequence,103 lesions were detected by T₂WI sequence,126 lesions were detected by T₂flair sequence,and 117 lesions were detected by DWI sequence.The detection rates of lesions were 46.15%,60.95%,74.56%and 69.23%,respectively.147 lesions were detected in SWI sequence,the detection rate was 86.98%,which was significantly higher than those of T₁WI,T₂WI,tflair and DWI sequences(P<0.05).Conclusion SWI sequence has a higher detection rate than conventional MR sequence and DWI sequence in the diagnosis of cerebral trauma microbleeds,which is of great significance for the clinical diagnosis and prognosis evaluation of patients with brain trauma microbleeds.