常规US、CEUS及增强CT检出转移性肝癌的价值

摘要

目的：比较二维超声（ US）、超声造影（ CEUS）及增强CT（ CECT）对肝转移癌的检出率，探讨CEUS对肝转移癌的临床应用价值。方法：对67例已确诊肝转移癌患者进行US、CEUS及CECT检查，比较三种影像学方法对肝转移癌的检出率。结果：肝转移癌CEUS延迟期均呈低回声充盈缺损，动脉期表现为团状增强、环状增强、不均匀增强、低增强、等增强等五种增强模式。US和CEUS检出转移灶数分别为（1.8±1.3）个和（4.2±1.7）个（P＜0.05），检出率分别为51.5％和91.9％（P＜0.05）。CEUS与CECT对转移癌检出率差异无统计学意义。结论：CEUS较常规超声明显提高了对肝转移癌的检出率，CEUS及CECT两者互补，可提高诊断率，在肝转移癌检测方面有较好的应用前景。%Objective:To evaluate the role of contrast-enhanced ultrasound( CEUS)on the detection of hepatic metastases in comparison with conventional ultrasonography( US ) and contrast - enhanced computed tomography ( CECT). Methods:Sixty-seven patients with hepatic metastases underwent US,CEUS and CECT images. Results:Hepatic metastases showed five enhancement patterns with CEUS,including bolus hyper -enhancement,peripheral rim enhancement,inhomogeneous enhancement with necrosis,hypo-enhancement,isoenhancement with liver paren-chyma,all hepatic metastases showed dark defects in portal and delayed phase . The mean number of metastases with CEUS was greater than that of US(4. 2 ± 1. 7 vs 1. 8 ± 1. 3,P<0. 05). The detection of hepatic metastases was 51. 5% and 91. 9% respectively(P<0. 05). CEUS and CECT had no statistically significast difference in the de-tection of hepatic metastases(P>0. 05). Conclusion:CEUS can improve detection of hepatic metastases.