[经典]MRI诊断脑实质转移瘤的应用

《[经典]MRI诊断脑实质转移瘤的应用》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。

1、[经典]MRI诊断脑实质转移瘤的应用MRI诊断脑实质转移瘤的应用【摘要】目的分析脑实质转移瘤MRI征象，探讨MRI诊断脑实质转移瘤的价值。方法对112例经临床及病理证实的脑实质转移性肿瘤患者行MRI增强扫描，分析评价增强扫描病灶的征象特点。结果112例脑实质转移瘤患者，病灶位于大脑半球69例，小脑内43例;全脑多发48例；单发病灶64例，发生于幕上占67❷19%,幕下占32❷81%；增强后共发现病灶743个，环状强化274个，结节状强化336个，团块状强化94个，不规则形增强39个；最小直径为2mm,最大直径为6

2、0mm,大部分直径＜30mmo结论MRI增强扫描可见病灶在大脑半球或小脑内均可发生，多呈圆形或类圆形，直径一般〈30mm,瘤体呈多种强化形式，以结节状多见，多伴瘤体周围水肿，常见坏死囊变、出血。综合分析可提高诊断和鉴别诊断水平。【关键词】脑实质转移瘤;MRI；增强扫描TheeffectofMRIdiagnosethecerebralmetastasistumorLIZhan❷jun,ZHOUZhi^yang,WANGYing❷DepartmentofRadiology,TheFifthAffiliatedHosp

3、italofSunYat❷senUniversity,ZhuHai519000,China[Abstract]0bjectiveToanalyseandinvestigatetheMRIappearaneeandthevalueofMRIdiagnoseofthecerebralmetastasistumor'❷MethodsMRIenshaneedscanningwereperformedonthe112casesdiagnosedcerebralmetastasistumorbyclinicalmethoda

4、ndpathology,analysisedandappraisedtheappearancecharacteristicofthecerebralmetastasistumor❷Resultsl12casesofthecerebralmetastasistumor,thecerebralmetastasistumorsof69caseswereinthecerebralhemisphere,43caseswereintheepencephalon;multiplemetastasisofglobalbrain4

5、8cases,solitarymetastasistumors64cases,supratentorialis67❷19%andsubtentorialis32❷81%;afterenhanceddiscover743metastasistumors,therewere274circleenhancements,336nodularenhancements,94massenhancements,39irregularshapeenhancements:diversifiedenhancementswasconcu

6、rrence❷Themaximumdiameterwas2mm,minimumdiameterwas60mm,mostofalldiameterwereless❷than30mm0ConclusionMRIenhancedseanningdiscoverthecerebralmetastasistumorinthethecerebralhemisphereandtheepencephalon,mostarerotundityorresemblingrotundity,thediameterisless❷than3

7、0mm,thetumorspresentdiversifiedenhancements,mostarenodularenhancements,mosthaveedema,necrosiscapsuleandhaemorrhagearecommon0Analysisbysynthesiswouldenhancethelevelofdiagnosisanddifferentialdiagnosis・LKeywords]Cerebralmetastasistumor;MRI;Enhancedscanning作者单位：5

8、19000珠海，中山大学附属第五医院放射科（李占军王颖）；中山大学附属第六医院放射科（周智洋）通讯作者：李占军脑转移瘤是中老年人较为常见一种恶性疾病，约占全部颅内肿瘤的40%,常有明显的神经系统症状与体征，严重的危害患者健康，是导致肿瘤患者迅速死广的主要原因之HloMRI增强扫描能够更清晰的显示肿瘤的的异常征象，发现更多小体积病灶,可对肿瘤作岀定性诊断，提高脑转移瘤诊断率