dwi对脑出血的诊断及鉴别诊断

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1、万方数据实用放射学杂志2014年9月第30卷第9期JPractRadi01，Sep．2014，V01．30，No．9DWI对脑出血的诊断及鉴别诊断张华文，周欣，梁浩然，赵宁(陕西省核工业二一五医院影像科，陕西咸阳712000)摘要：目的探讨脑出血(ICH)不同时期磁共振扩散加权成像(Dwl)信号特点及表观扩散系数(ADC)值变化规律。方法回顾性分析56例经CT证实的ICH患者MR图像，结合出血时间进行分期，分析各期MR信号特点，并测量血肿内部及健侧对应部位ADC值，对各期ADC值做统计学分析。结果超急性期、亚急性晚期、慢性期血肿DwI大部为高信号，其中超急性期血肿边缘见低信号环；

2、急性期、亚急性早期DwI以低信号为主，边缘见高信号环；各期患侧ADC值与健侧比较均明显下降，其中急性期和亚急性晚期下降幅度最大；除慢性期外双侧ADc值比较均有显著性差异(P

3、htedimagingindiagnosisanddifferentialdiagnosisofintracranialhemorrhageZHANGH““训P，2，ZHOUXin，LIANGHnor＆咒，ZHAONi咒g(Dep以仃mP门fo厂RndioZogy，N“fZP口rJ行d“sfry215Hos户i￡口Zo厂S矗以以”ziProui”fP，XinnyⅡ九g，S矗“乜，2jriProui，2fP712000，C丘i门口JAbstract：0bjectiveToinvestigatethesignalcharacteristicsondiffusi()n—weighted

4、imaging(DWI)andchangesoftheapparentdiffusioncoefficient(ADC)valuesofintracerebralhemorrhageatthedifferentstages．Methods56patientswithintracerebralhemorrhageconfirmedbyCTscanwereenrolledinthisretrospectivestudy．ThesignalcharacteristicsofthehemotomasatthedifferentstagesonMRlwereanalyzed．TheADCv

5、aluesinthehematomasandthecontralateralnormalregionsweremeasuredandanalyzedstatisticaUy．ResultsDWIshowedthathematomaswerehighsignalatthehyperacute，latesubacuteandchronicstage，andlowsignalattheacuteandearlysubacutestage．Hyperintensityringssurroundingthehemat。mawerepresentedatthehyperacutestage，

6、andhy—pointensityringsattheacuteandearlysubacutestage．C。mparedwiththecontralateralnormalregions，theADCvaluesinthehema—tomasdecreasedatallthestages，andespeciallyattheacuteandlatesubacutestage．Thedifferencesweresignificant(P·

7、hemorrhageatdifferentstageshavecertaincharacteristics．TheADCvalueinthecenterofthehematomadecreased．DWIcandifferentiateintracerebralhemorrhagefromacutecerebrallnfarc—tion，andishelpfulforearlyclinicaltreatment．Keywords：intracerebralhemorrhage；a