摘要
目的分析磁共振敏感加权成像(SWI)对颅内微出血性疾病的鉴别诊断价值。方法选取2017年6月至2019年5月我院收治的颅内微出血性疾病患者86例为研究对象,均行3.0T MR SWI及常规MRI(T1WI、T2WI、DWI、FLAIR)检查,分析颅内微出血(CMHF)病灶的影像特点,并对比SWI和常规MRI序列对CMHF的检出率,比较SWI、常规MRI序列诊断CMHF的效能。结果86例患者中微出血(CMB)57例,灶性出血(ICH)29例,共检出CMHF 410个(含CMB 288个,ICH 122个);SWI序列上,CMHF主要表现为横截面呈圆形、卵圆形或类圆形信号,直径在2~5mm,可见信号均匀或高低信号相间的同心圆状混杂信号,边界清晰,表面光滑,无明显水肿或占位效应;CMHF主要位于基底核区、大脑皮质与皮质下,且SWI对CMHF检出率高于T1WI、T2WI、DWI、FLAIR(P<0.05);SWI诊断CMHF的灵敏度、特异度、约登指数、阳性预测值、阴性预测值均高于常规MRI序列。结论SWI对颅内微出血性疾病有较高鉴别诊断价值,可为临床治疗方案的选择提供依据。
Objective To analyze the differential diagnosis value of susceptibility weighted imaging(SWI)for cerebral microhemorrhage(CMH).Methods A total of eighty-six CMH patients who were admitted to the hospital from June 2017 to May 2019 were enrolled.All patients underwent 3.0T MR SWI and routine MRI(T1WI,T2WI,DWI,FLAIR).The imaging features of cerebral microhemorrhage foci(CMHF)were analyzed.The detection rate of CMHF by SWI and routine MRI sequences was compared.The diagnostic efficiency of SWI and routine MRI sequences for CMHF was compared.Results Among the 86 patients,there were 57 cases with cerebral microbleed(CMB)and 29 cases with intracerebral hemorrhage(ICH).There were 410 CMHF(288 CMB,122 ICH)cases detected.In SWI sequences,main findings of CMHF were that cross section showed circular,oval or circular-like signals,with diameter of 2-5mm.There were uniform signals or concentric circles-like mixed signalsof high-low signal alternating,with clear boundary,smooth surface,and without obvious edema or mass effect.CMHF were mainly located at nucleus basalis,cerebral cortex and under cortex.The detection rate of SWI for CMHF was higher than that of T1WI,T2WI,DWI and FLAIR(P<0.05).Sensitivity,specificity,Yoden index,positive predictive value and negative predictive valueof SWI for diagnosis of CMHF were higher than those of routine MRI sequences.Conclusion SWI is of relatively higher differential diagnosis value for CMH,which can provide basis for selection of clinical treatment options.
作者
常慧贤
李彩霞
管立威
CHANG Hui-xian;LI Cai-xia;GUAN Li-wei(Magnatic Resonance Imaging Room,Jiaozuo Second People's Hospital,Jiaozuo 454150,Henan Province,China)
出处
《中国CT和MRI杂志》
2020年第12期18-21,共4页
Chinese Journal of CT and MRI
关键词
磁共振敏感加权成像
颅内微出血性疾病
鉴别诊断
Susceptibility Weighted Imaging
Cerebral Microhemorrhage
Differential Diagnosis
