MR弥散加权成像诊断肝硬化不典型癌变结节  

Diffusion weighted imaging diagnosis of cancerization nodules of liver cirrhosis

作　　者：黄泽光[1] 谢长浓[1] 吴永峻[1] 

机构地区：[1]广东医学院附属医院放射科,广东湛江524001

出　　处：《中国医学影像技术》2010年第4期701-704,共4页Chinese Journal of Medical Imaging Technology

摘　　要：目的探讨MR弥散加权成像(DWI)对肝硬化不典型癌变结节的诊断价值。方法对34例经临床及病理确诊的肝硬化不典型癌变结节患者行常规MR平扫、动态增强扫描及DWI(b值分别取0、500、1000s/mm2),比较常规扫描及DWI对肝硬化癌变结节的检出率。结果常规扫描及动态增强扫描共发现21例肝癌28个癌结节,弥散加权成像发现27例共37个癌结节,弥散加权成像发现的病例数及结节数均多于常规MR平扫及增强扫描,两种检查方法对癌变结节检出率的比较差异有统计学意义(P=0.025)。结论DWI诊断肝硬化不典型癌变结节较MR常规及动态增强扫描更为敏感。Objective To investigate the clinical value of diffusion weighted imaging （DWI） in diagnosis of atypical cancerization nodules （CNs） of liver cirrhosis. Methods Totally 34 patients with atypical CNs of liver cirrhosis confirmed pathologically underwent routine MR,dynamic enhancement,and DWI （b=0,500,1000 s/mm2）. The detection rate of CNs of liver cirrhosis between routine MR and DWI was compared. Results Totally 21 patients with 28 cancerization nodules were diagnosed with routine and dynamic enhancement MR,while 27 patients with 37 cancerization nodules were detected with DWI. Significant difference was found in the detection rate between routine scan and DWI （P=0.025）. Conclusion DWI shows more advantage than routine and dynamic enhancement MR for detection of liver cirrhosis with atypical CNs.

关 键 词：肝硬化 癌变结节 磁共振成像 弥散加权成像 

分 类 号：R445.2[医药卫生—影像医学与核医学] R657.31[医药卫生—诊断学]