头颈部血管瘤及血管畸形的CT、MRI诊断

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1、万方数据1128头颈部血管瘤及血管畸放射学实践2006年11月第21卷第11期Radi01Practice，Nov2006，Vol21，N。．11形的CT、MRI诊断头颈部影像学陈燕萍，赵军，黄晖，王劲，张雪林【摘要】目的：分析头颈部血管瘤及血管畸形的CT、MRI表现，探讨其诊断及鉴别诊断价值。方法：搜集经手术病理或DSA证实，临床及影像资料完整的47例头颈部血管瘤或血管畸形病例的资料，对其进行回顾性分析。CT检查33例，MRI检查14例。结果：海绵状血管瘤21例，T。wI呈均匀等或低信号，TzwI呈高信号，增强扫描呈中等不均匀

2、强化并可见纡曲血管强化；CT平扫呈不均匀等密度、囊状低密度，3例可见圆点状静脉石，增强扫描轻至中等度强化，其中6例见线条状粗大纡曲血管影。蔓状血管瘤23例，病变弥漫，无明显边界。T。wI呈等信号，T：wI呈不均匀高信号，其内见粗大的流空血管影及低信号静脉石，增强扫描明显不均匀强化；CT平扫等密度，见高密度圆点状静脉石，增强明显强化，可见蚯蚓状粗大血管团。淋巴管瘤3例，边界清楚，平扫为低密度，增强扫描无明显强化。结论：CT及MRI可较好显示头颈部血管畸形，蔓状血管瘤为动静脉畸形或高流速血管畸形，影像见粗大纡曲的血管影。低流速的静脉

3、畸形、淋巴管畸形须与头颈部其它囊性病变鉴别。【关键词】血管瘤；血管畸形；体层摄影术，X线计算机；磁共振成像【中图分类号】R814．42；R445．2；R732．2【文献标识码】A【文章编号】1000—0313(2006)1l一1128一05DiagnosticValuesofCTandMRImaginginHemangiom嬲andVascularMalf0咖ationsoftheHeadandNeckCHENYan—ping，ZHAOJun，HUANGHui，eta1．ImagingDiagnosticCenter，Nanfa

4、ngHospital，SouthernMedicalUniversity，Guang—zhou510515，P．R．China【Abstract】objective：ToevaluatethediagnosticvaluesofCTandMRIinheadandneckhemangiomasandvascularmalformations．Methods：TheCTandMRIscansof47casesofheman鲥omasandvascularmalformationsofheadandneck，surgicaUyprov

5、enordiagnosedwithDSA，werecollectedandretrospectivelyreviewed．33and14ofthe47caseswereexaminedwithCTandMRIrespectively．Results：Hemangiomas(n一21)appearedasintermediatesignalintensityfocionTlWIandhighsignalintensitylesionsonT2WI，homogeneousandmediumdensityfocionCTplainsc

6、ans．Postcontrastly，heman—giomasshowedintermediateenhancementwithenlargedvesselswithinoraroundthelesions．Arterio—venousmalformations(AVM，n一23)showeddiffuseandheterogeneoussignalintensitywith10wsignalvessels(becauseofflowvoidphenome—non)onbothT1WIandT2WI．0nenhancingsca

7、ns，AVMsdisplayedashighlyenhancedlesionswithnumerousfeedingandefferentvessels．0nCTscans，AVMsdemonstratedasintermediatedensityfoci，accompaniedwithphlebolithssometimes，andmarkedlyenhancedaftercontrastagentinjection．Lymphaticmalformations(n=3)showed10wdensityandnon_en—ha

8、ncedlesionswithclearmargins．Conclusion：CTandMRlwerehelpfulinevaluatingtheextentsandtypesofheadandneckhemangiomasasweUasvascularmalf