编码谐波超声血流成像诊断原发性小肝癌的应用价值

Applied Value of Coded Harmonic Angiography in Diagnosis of Small Hepatocellular Carcinoma

目的 运用编码谐波血管造影技术观察原发性小肝癌造影成像特点 ,探讨该方法对原发性小肝癌定性诊断的临床应用价值。方法 经左前臂浅静脉注射氟碳造影剂 ,对 2 2例患者共 2 4个病灶进行编码谐波血管造影检查 ,观察肿块区域血管显影时间、血管分布 ,并比较肿块与肝实质造影增强情况。所有病例造影前后表现均同步录像。结果 注射造影剂后 1 5～ 2 0秒肿块开始显影 ,6 0～ 90秒达到高峰 ,持续时间约 2 0 0～ 2 6 0秒 ,肿块周围血管显影较正常肝组织早 ,形成环状浓染 ,大部分肿块增强程度高于正常肝组织 ;少部分为不增强团块(1 7% )。结论 编码谐波血管造影能实时观察原发性小肝癌的造影成像特点 。

Objective Using coded harmonic angiography to observe contrast imaging features of small hepatocellular carcinoma,we discussed the applied value of this technique in qualitative diagnosis of small hepatocellular carcinoma Methods Through left forearm venous bolus injection of fluorine carbon contrast agent,22 patients with 24 small hepatocellular carcinoma lesions were examined with coded harmonic angiography Intratumoral vessel enhanced time and vascularity were observed and the contrast images of the tumors were compared with those of the liver parenchyma All patients were simultaneously videotaped before and after the contrast.Results The tumor enhancement commenced about 15～20 s after the injection of the contrast agent.peak time reached about 69～90 s,and the persistence time was about 240～300 s.The developments of peripheral vessels around the tumurs were earlier than those of normal liver tissues and formed ring like echoes with dense stains.The enhancement degree of most lesions was more obvious than that of normal liver tisues,but a few lesions formed masses without enhancement(17%).Conclusions Coded harmonic angiography can real timely display contrast imaging features of small hepatocellular carcinomas and has high applied value in qualitative diagnosis of them.