灰阶超声造影在肝泡状棘球蚴病中的应用

Effects of contrast-enhanced grey scale ultrasonography on characterization of hepatic alveolar echinococcosis

目的 探讨肝泡状棘球蚴病灰阶超声造影的特征性表现。方法 对9例肝泡状棘球蚴病灶在二维超声、彩色多普勒血流显像的基础上进行灰阶超声造影检查，回顾性分析其声像图表现。结果 二维声像图显示9例患者共11个病灶，其中8个病灶呈实质性中高回声，外形极不规则；另3例病灶呈混合型，中央见不规则无回声区。彩色多普勒血流显像示11个病灶内部均无血流信号。超声造影在动脉早期所有病灶周边即出现边框样增强带，并持续至实质期，11个病灶内部在造影期间均未见增强。结论 超声造影可以更好地显示肝泡状棘球蚴病病灶的确切边界，反映周边增殖区微血供状态，为肝泡状棘球蚴病外科手术提供更多的诊断信息。

Objective To investigate the characteristic imaging of hepatic alveolar echinococcosis （HAE） by contrast-enhanced grey scale ultrasonography（CEUS）. Methods Nine patients with eleven HAE lesions were studied with conventional ultrasound and color Doppler flow imaging（CDFl）, before undergoing contrast-enhanced ultrasonography. The size, shape, boundary, echogenicity, and the perfusion characteristics of each lesion were measured. Results Using conventional US, eight of the eleven lesions had exhibited irregular hyperechoic substantive areas,while the other three lesions were of mixed echotype with irregular arechoic areas in the center of the lesions. Using CDFI, the eleven lesions displayed no blood flow signal. Using CEUS in the arterial, portal and delayed phases, all lesions showed no contrast enhancement within the lesions ,with circular enhancement surrounding as an irregular and distinct margin. Conclusions CEUS can show an accurate margin for HAE,and detect microvessel perfusion of the lesions＇ borders. It may play an important and useful role in the diagnosis and treatment of HAE.