超声造影对肝脏转移癌的诊断应用价值  

Role of contrast-enhanced ultrasonography in the diagnosis of liver metastases

作　　者：李猛[1] 于晓玲[1] 梁萍[1] 李华[1] 曹晓林[1] 范瑾[1] 

机构地区：[1]中国人民解放军总医院超声科,北京100853

出　　处：《医学影像学杂志》2008年第2期179-182,共4页Journal of Medical Imaging

摘　　要：目的:探讨超声造影对肝脏转移癌的诊断应用价值。方法:对49例恶性肿瘤患者肝脏行常规超声检查及低机械指数超声造影检查,对肝内转移性病灶超声造影表现进行分析。结果:经超声造影新发现47个病灶,其中小于1.0cm的病灶占55.3%(26/47)。肝转移病灶的增强模式可分为4种:A.病灶周边快速环状强化60/131(45.8%),病灶内部呈低或无增强,之后周边增强部分造影剂迅速退出呈低增强;B.病灶于动脉期呈快速整体强化并迅速廓清51/131(38.9%);C.病灶于动脉期和门脉期基本与肝脏实质同步强化,延迟晚期呈低增强12/131(9.2%);D.病灶于造影三期均低于肝实质呈低增强表现8/119(6.1%)。结论:肝脏转移病灶来源和大小不同其增强模式表现亦不相同;实时超声造影可提高对肝脏转移病灶尤其可提高直径小于1.0cm的微小转移灶的检出率。Objective： To explore contrast-enhanced ultrasonography （CEUS） features of liver metastases and the role of CEUS in diagnosing liver metastases.Methods：Forty-nine patients with established primary malignancy were enrolled in the study.All the patients were examined by CEUS with low mechanical index.Results：Different contrast enhancement patterns were observed according to lesion characteristics： A （45.8%）：diffuse enhancement during the arterial phase,and hypoechoic appearance during the portal venous phase and the late phase. B （38.9%）：peripheral tim-like enhaneeraent during the arterial phase,and hypoechoic appearance during the portal venous phase and the late phase. C （9.2%） ：isoechoic appearance during the arterial phase, and hypoechoic appearance during the late phase. D （6.1%） ：hypoechoic appearance during all phases. Occult metastases were detected by CEUS, and the diameter of them usually less than 1.0 cm （55.3%）.Conclusion：Real-time contrast-enhanced ultrasonography can improve the diagnostic rate of liver metastases.

关 键 词：超声造影 造影剂 肝转移癌 

分 类 号：R735.7[医药卫生—肿瘤] R445.1[医药卫生—临床医学]