实时灰阶超声造影和螺旋CT诊断肝肿瘤的比较研究

目的比较实时超声造影和螺旋CT显示肝肿瘤血流信号的特点.方法对29例肝肿瘤(原发性肝癌16例,转移性肝癌2例,血管瘤6例和肝局灶性结节增生5例)分别进行超声造影和CT检查.结果超声造影显示肝恶性肿瘤的整体型、血管瘤的周边型及局灶性结节增生的中央型出现率显著高于其他病变(P<0.01).CT示恶性肿瘤中94.4%(17/18) 动脉期强化、门脉期低密度;血管瘤中83.3%(5/6)呈结节状强化;肝局灶性结节增生动脉期均明显强化.超声造影和CT鉴别肝肿瘤的能力无显著差异.结论超声造影和CT都能敏感地显示不同肝肿瘤的血供特征.

Comparison of enhancement features of hepatic tumors on SonoVue-enhanced ultrasonography and helical

Objective To compare the features of hepatic tumors on real time SonoVue enhanced ultrasonography with multi slice helical CT. Methods SonoVue enhanced ultrasonography and helical CT were performed on 29 hepatic tumors, including 16 HCCs and 2 liver metastasis, 6 hemangiomas and 5 focal nodular hyperplasias (FNH). Results The most common enhancement style on ultrasonography of malignant liver tumors, hemangiomas, and FNHs were holistic, peripheral, and central enhancement, respectively. On helical CT, 94.4% (17/18) of malignant liver tumors exhibited hyper attenuation at the arterial phase and hypo attenuation at the portal venous phase; 83.3% (5/6) of hemangiomas presented peripheral nodular enhancement at the arterial phase and hyper attenuation at the delayed phase; all FNHs presented enhancement at the arterial phase and hyper or iso attenuation at the portal venous phase. There was no significance ( P >0.05) in differentiating liver malignancy from benign by ultrasonography and helical CT. Conclusion Both ultrasonography and helical CT are sensitive and accurate in demonstrating hemodynamics of hepatic tumors.