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动态磁敏感对比增强灌注技术在脑肿瘤鉴别诊断中的价值 被引量:4

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摘要 目的探讨动态磁敏感对比增强灌注(DSC)技术在脑肿瘤鉴别诊断中的应用价值。方法对29例经病理证实为脑肿瘤患者术前分别行常规MR、DSC及常规T1增强扫描,其中高级别胶质瘤14例,脑膜瘤7例,转移瘤8例。分别获得相应灌注伪彩图及曲线图,测量肿瘤实质最大灌注区的rCBV值,将所测数值进行单因素方差分析,并应用LSD-t检验进行两两之间比较;测量高级别胶质瘤及转移瘤瘤周水肿区的最大rCBV值,采用两独立样本t检验进行比较;分析三种肿瘤实质区及瘤周水肿区的曲线特点。结果高级别星形细胞瘤、脑膜瘤及转移瘤的肿瘤实质区的最大rCBV值(与对侧正常脑白质相比)分别是4.8 1 7±2.1 1 9、9.484±2.634、5.157±2.450;其中脑膜瘤与高级别胶质瘤、转移瘤差异具有统计学意义(P<0.05);而高级别胶质瘤与转移瘤间差异无统计学意义;高级别胶质瘤与转移瘤瘤周水肿区的最大rCBV值分别为0.748±0.212、0.267±0.185,二者差异具有统计学意义(P<0.05);脑膜瘤脑血流灌注呈明显高灌注,其时间-信号曲线特点为负性增强曲线降支与升支明显不对称,二者交角增大,对比剂首过后不能回复到基线水平。结论 DSC灌注技术可反映肿瘤实质及瘤周水肿区的血流微循环及分布情况,为高级别胶质瘤、转移瘤、脑膜瘤的鉴别诊断提供帮助。
出处 《中西医结合心脑血管病杂志》 2011年第3期319-321,共3页 Chinese Journal of Integrative Medicine on Cardio-Cerebrovascular Disease
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共引文献46

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