摘要
目的：提高MRI对肝细胞癌的诊断与鉴别诊断能力。通过分析MRI征象，建立肝细胞癌的MRI信号变化模式。材料与方法：28例肝细胞癌患者均接受MRI检查。男24例，女4例，年龄32～80岁，平均52岁。检查使用0．5T超导型MR成像系统。常规SE序列T1W成像．TSE序列T2W双回波成像。采用双盲法作前瞻性回顾分析。结果：MRI能清楚显示肝细胞癌的部位，大小、形态、数目，与周围组织关系及继发改变。其MR信号变化具有一定特征性，即T1WI多呈低信号强度，T2WI第一回波（PDWI）呈稍高信号强度或等信号强度，T2WI第二回波多呈不均质性稍高信号强度。结论：根据MRI表现，尤其是信号变化特征，对肝细胞癌能作出定性诊断。并建议把SE序列T1WI，TSE序列T2WI双回波成像技术作为肝细胞癌的常规和首选检查方法。
Purpooe: To improve the dbenostic and differential dingnostic efficacy of hepatocellular carcinoma (HCC) byanalrring and establishing MRI signal patters Meterlal, and methods: 28 Cases (male 24 cases, female 4 cases, average 52years) with HCC were studied with 0.5T magnet using spin -echo (SE) T1 -weighted and tutbo-spin -echo (TSE ) T2-weight-ed double -echo image. MRI findings were retrospectively analysed by independent double -blind reading. Results: MRI clearlydemonstrated clinically sueful imformations about the location, size, shape, number of HCC, as well as its relation with surround-ing structutes and secondary changes. Characteristic MRI signal changes were found in HCC, eg. Main MRI features of HCC pre-sented as many byPointensity on T1 WI, Orisointensity or slightly hyper intensity on T2 Wi first -echo (PDWI),as many inhomoge-neously slishtly hyperintensity on T2 WI second-echo. Conclusion: According to MRI findings, especial the MRI sisnal changes,confuming diagnosis of HCC could be made MRISE T1 WI and TSE T2 WI double -echo image could be routinely used as the fitstinvestigation for HCC.
出处
《现代医用影像学》
1998年第1期13-16,共4页
Modern Medical Imageology
关键词
肝细胞癌
MRI
肝肿瘤
Liver Hepatocellular carcinoma Magnetic resonance imaging
