摘要
目的:探讨多普勒超声(DUS)和造影增强超声(CEUS)对肝脏局灶性结节样增生(FNH)的诊断价值和影像表现。方法:应用低机械指数超声造影技术(CPS和CPI)对16例FNH的多时相造影增强表现进行分析,并与DUS表现进行对比,来评价它们对FNH的诊断价值。结果:尽管16例FNH多普勒超声均可显示内部血流信号,但与二维超声相比,二者对病灶良、恶性判断的差异并无显著性意义(P>0.05)。16例FNH的超声造影表现:增强自病灶中央开始呈星状或辐射状(81%);门脉和延迟相可见中央瘢痕(69%),除中央瘢痕外,病灶呈均匀增强(100%);延迟相病灶呈等增强或稍高增强(93%)。CEUS对FNH诊断的准确符合率为87.5%,诊断为良性病变的准确符合率达100%,与DUS比较差异有显著意义(P<0.01)。结论:造影增强超声可显著提高FNH诊断的准确性。
Objective：To evaluate the diagnostic value and imaging characteristics of Doppler ultrasonography （DUS） and contrast-enhanced ultrasonography （CEUS） in focal nodular hyperplasia （FNH）. Methods： CEUS examination using low mechanical index techniques of CPS and CPI were undergone in 16 cases of FNH. The tri-phase imaging demonstrations of the lesions were studied and compared with those shown in DUS to evaluate the role of CEUS in FNH diagnosis, Results： Although DUS was able to display blood flow signals in all the FNH lesions,however,in comparison with. those manifestations obtained from the baseline sonography,DUS was still not superior to the latter in the prediction of the benign/malig- nant nature of the lesions statistically （P〉0.05）. The CEUS imaging characteristics of 16 FNH showed central starlike arterial enhancement in the early phase （81 % ）, homogeneous contrast enhancement of the lesions in the portal venous and late phase （100 % ） with central scar （69 % ）, and isoechoic or hyperechoic lesions in the late phase （93 % ）. The diagnostic accuracy rate of CEUS in FNH was 87.5% （14/16） and the accurate benign nature prediction rate was 100%,showing significant difference （P〈 0. 01 ） compared with that of DUS. Conclusion.CEUS was capable of significantly improving the diagnostic accuracy of hepatic FNH.
出处
《放射学实践》
2006年第11期1175-1178,共4页
Radiologic Practice
基金
国家留学回国人员科研启动基金资助教外司留(2005-383)
湖北省自然科学基金项目资助(2004ABA247)
