磁共振SWI在诊断脑血管病微出血灶中的应用价值

目的 探讨分析磁共振磁敏感加权成像技术(SWI)在脑血管病微出血灶检出中的应用价值.方法 选取本院常规MRI扫描(T1WI、T2WI、T2-FLAIR)、DWI及SWI扫描,且SWI脑微出血灶检出阳性的脑血管病患者55例,探讨常规MRI序列、DWI及SWI在微出血灶检出阳性及检出病灶数目方面的差异.结果 55例患者微出...

The application value of magnetic resonance SWI in the detection of microbleeds in cerebrovascular disease

Objective To investigate the value of magnetic sensitive imaging(SWI)in the detection of microbleeds in cerebrovascular disease.Methods Retrospective analysis of 55 cases of cerebrovascular disease patients from June 2019 to June 2020 in our hospital was comducted by routine sequences of magnetic resonance imaging(T₁WI,T₂WI,T₂-FLAIR),DWI and SWI scanning,and SWI-detected microbleeds in all cases.We explored the difference among routine MRI,DWI and SWI sequences in the detection of positive results of microbleeds and number of detected lesions.Results Microbleeds were detected in 55 patients,SWI sequences was positive in all 55 cases,DWI sequences was positive in 43 cases,routine MRI was positive in 19 cases,the positive SWI of three sequences of microbleeds was significantly higher than that of DWI and routine MRI sequences,the difference was statistically significant(P<0.001).In 55 cases,391 microbleeds were detected by SWI sequence,138 microbleeds detected by DWI sequence,and 32 microbleeds detected by routine MRI sequence.The number of microbleeds detected in SWI sequence was significantly higher than that of DWI and routine MRI sequences,the difference was statistically significant(P<0.001).At the same time,the distrbution of cerebral microbleeds in different parts of the brain in 55 patients was statistically analyzed.There were 94 in cortical and subcortical white matter.There were 97 in basal ganglia,93 in thalamus,39 in cerebellum.There were 68 brainstem.The microbleeds mainly concentrated in basal ganglia,thalamus,cerebral cortex and subcortical,the second was cerebellum and brainstem.The number of lesions in cerebellum were significantly less than those in other parts of brain,the difference was statistically significant(P<0.001).Conclusion SWI sequence is significantly superior to DWI and routine MRI in detecting cerebral microbleeds,which has high application value.