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ID:15392083
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时间:2018-08-03
《propeller lava技术对原发性肝癌mri的诊断价值》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、PropellerLAVA技术对原发性肝癌MRI的诊断价值【摘要】 目的:探讨在GESigna1.5T超导型磁共振成像仪使用肝脏容积超快速三维成像(PropellerLAVA)序列作多期动态增强扫描对原发性肝癌的诊断价值。方法:回顾性分析了36例经手术、实验室检查、穿刺活检及病理证实的原发性肝癌患者的MRI表现,分别采用常规自旋回波序列(T2Wl、T1WI)、LAVA序列增强多期(动脉早期、动脉晚期和门静脉期)扫描及T1WI常规增强扫描;分别观察各序列肿瘤病灶显示的数量、MR征像及LAVA序列各期病灶强化程度、强化规律
2、,病灶血供及肝血管解剖关系。评价各序列对病灶的显示、形态及定性能力。结果:LAVA序列增强多期扫描发现53个病灶(100%),2DT1WI常规增强扫描发现48个病灶(90.6%),P<0.05,T2WI、T1WI平扫分别发现病灶为44个(83.3%)及41个(77.7%),P<0.05,LAVA序列对病灶各期抓取准确,动脉期及门静脉血管图像显示清晰,16个病灶可显示其血供关系。结论:LAVA序列多期动态增强对原发性肝癌的病灶显示,血供关系及肝血管显示方面较常规序列具有较大优势。【关键词】 原发性肝癌;MRI;LAVA
3、序列 ValUeorMRImagingwithPropellerLAVATechnologyinDiagnosisPrimaryLiverCarcinoma Abstract:ObjectiveToevaluatethevalueofMRIimagingwithpropellerLAVAtechnologyindiagnosisprimarylivercarcinoma(PLC).MethodsThecomprehensiveMRIfindwereanalyzedretrospectivelyin36PLCpati
4、entsverifiedbyoperation,laboratorytests,andpathology.TheMRIexaminationsincludedroutineT1WIandT2WIscanning,enhancedT1WIscanningandenhancedmultiphasic(earlyarterialphase,latearterialphaseandportalvenousphase)LAVAscanning.ThelesionnumberandMRIfeaturesineachsequenc
5、es,thecontrastenhanceddegree,regulation,bloodsupplyingandanatomicalrelativeswithhepaticbloodvesselsofeachlesiononthreephasesinLAVAsequencewerecarefullvobserved.ThelesiondetectionratesandlesioncharacterizationabilitywerecomparedamongvariousMRIsequences.Results4
6、4(83.3%),41(77.7%),48(90.6%)and53(100%)fociweredisplayedrespectivelyonT2WI,nonenhancedT1WI,enhancedT1WI,anddynamiCenhanced3DLAVAimages(P<0.05).TheVascularimagesonbotharterialandvenousphasesofLAVAsequenCewerebothClearlydisplayed,andthefeedingarteriesanddraining
7、veinofl6fociwereclearlydepictedafterreconstruction.ConclusionLAVAsequenceimagesarebetterthanregularsequencesimagesinlesiondetection,characterizationforPLCandhepaticbloodvesselsdisplaying. keywords:Primarylivercarcinoma;MRI;LAVAsequence 原发性肝癌是临床常见的肝脏恶性肿瘤,及早发现病灶
8、,明确病灶性质、范围和周围组织、血管关系对于其临床治疗、复查及评估患者愈后具有极高的指导作用,而目前,在常规T2WI和T1WI平扫基础上,采用T2WI平扫、钆喷酸二甲基葡胺(GDDTPA)进行T1WI序列增强扫描是诊断原发性肝癌的通用方法,但由于这些序列均存在扫描速度较慢、层厚及层间距较大、屏气时间偏长等缺点,对原发性肝癌特别是
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