论文部分内容阅读
目的回顾分析微小肝癌的1.5/3.0 T MRI表现,初步提出微小肝癌MRI诊断条件,以提高对微小肝癌的认识和早期诊断率。方法搜集肝癌治疗后复发及慢性肝病背景定期复查发现、经病理及临床诊断的微小肝癌患者共100例(112个癌灶),分析比较其MRI平扫及动态增强各序列图像表现及复查变化。结果主要序列表现:DWI高信号病灶数所占比例为91%(106/112);T_2WI高信号占83%(93/112);动态增强“快进快出”病灶数占63.3%(76/112),“快进慢出”病灶数占36.7%(36/112)。所有病例2个月~2.5年内复查增大。结论高场MR可作为目前微小肝癌最好的检查方法,建议诊断必需条件:(1)慢性肝病背景;(2)DWI/T_2WI至少一个序列显示高信号;(3)动态增强呈快进快出或快进慢出;(4)一定时期复查病灶进行性增大。
Objective To retrospectively analyze the 1.5 / 3.0 T MRI manifestations of small hepatocellular carcinoma (HCC), and to put forward MRI diagnostic criteria of HCC in order to improve the recognition and early diagnosis rate of HCC. Methods Collecting recurrence of liver cancer and chronic liver disease Background Regular review found 100 pathologically and clinically diagnosed patients with small hepatocellular carcinoma (112 foci), and their MRI plain scan and dynamic enhancement of each sequence were analyzed and compared. Results The main sequence showed that the proportion of DWI high signal lesions was 91% (106/112), the high T 2 WI signals accounted for 83% (93/112), and the number of dynamic enhancement fast forward fasting lesions was 63.3% 76/112), 36.7% (36/112) lesions were fast-moving slowly. All cases 2 months ~ 2.5 years review increased. Conclusion High field MR can be used as the best method for the diagnosis of small hepatocellular carcinoma at present. It is recommended to diagnose the necessary conditions: (1) the background of chronic liver disease; (2) at least one sequence of DWI / T_2WI shows high signal; (3) Or fast forward to slow out; (4) a certain period of review lesions increased.