肝内胆管细胞癌超声造影和增强CT增强特征的对比研究

目的:对比研究并总结肝内胆管细胞癌超声造影(CEUS)和增强CT(CECT)的增强特征.方法:回顾性分析经超声引导下穿刺活检病理证实的26例患者的30个肝内胆管细胞癌的CEUS和CECT图像,分别比较两种方法的增强时间、动脉期增强模式、增强特点及诊断符合率.增强时间观察始增时间与廓清时间.动脉期的增强模式为1～3级:1...

Comparative study of the enhanced features of contrast-enhanced ultrasound and contrast-enhanced CT in intrahepatic cholangiocarcinoma

Objective:To compare and summarize the enhanced features of contrast-enhanced ultrasound(CEUS)and contrast-enhanced CT(CECT)in intrahepatic cholangiocarcinoma.Methods:The CEUS and CECT images of 30 intrahepatic cholangiocarcinomas from 26 patients confirmed by ultrasound-guided biopsy were retrospectively analyzed,and the enhanced time,enhanced pattern of arterial phase,enhanced features and diagnostic coincidence rate of the two methods were compared.The enhanced time observed the arrive time and wash-out start time.The enhanced patterns of arterial phase were classified into grade 1~3:grade 1,peripheral enhancement;grade 2,unhomogeneous enhancement;grade 3,whole homogeneous enhancement.The enhanced features were divided into branch-like hyper-enhancement of arterial phase,larger wash-out range,patchy enhancement in portal phase and continuous centripetal enhancement in delayed phase.Results:Among the 30 intrahepatic cholangiocarcinomas,the arrive time and wash-out start time of CEUS were both earlier,with the arrive time<30 s and the wash-out start time<60 s.CECT started section scan from 30 s,so the arrive time and wash-out start time of lesions could not be accurately obtained.The enhanced patterns of CEUS and CECT in arterial phase were mainly hypovascular(grade1 or 2),25 and 27 respectively,and the difference was not statistically significant(P>0.05).The enhanced features of branchlike hyper-enhancement in arterial phase and larger wash-out range of CEUS were more than those of CECT,and the patchy enhancement in portal phase and continuous centripetal enhancement in delayed phase of CECT were more than those of CEUS(all P<0.05).There was no significant difference in the diagnostic coincidence rate of CEUS and CECT in intrahepatic cholangiocarcinoma(P>0.05).Conclusion:The enhanced features of CEUS and CECT in intrahepatic cholangiocarcinoma are different,and mastering the enhanced features of the two methods can effectively improve the diagnostic efficiency.