四维及二维超声造影在肝肿瘤诊断中的对照研究

目的 通过对比四维和二维超声造影对肝肿瘤显示及诊断的异同，探讨四维超声造影对肝肿瘤诊断的临床价值。方法 对17例(19个病灶)肝肿瘤患者先后进行二维和四维超声造影，经肘静脉注射超声造影剂SonoVue后观察肿瘤形态、灌注方式及滋养血管的特征。对比总结肝肿瘤四维超声造影的表现，分析其对肝肿瘤诊断的价值。结果 二维和四维超声造影均显示原发性肝癌强化方式呈“快进快出”；肝转移瘤稍晚动脉期周边增强，而在门脉期和延迟期无强化；肝血管瘤呈“慢进慢出”；原发性肝癌射频治疗术后病灶三期均无明显强化，四维超声造影图像上呈“空洞样”。四维超声造影时可更清晰地动态显示肝肿瘤立体形态，且动态显示的肝肿瘤滋养血管条数及其分支明显增多、分布更加密集。结论 四维超声造影图像立体感、层次感更强，能动态、连续显示肝肿瘤灌注及其滋养血管特征，可作为一种辅助肝肿瘤诊断的新方法。

A comparison between four- and two-dimensional contrast-enhanced ultrasonographic imaging techniques as applied to liver tumor diagnosis

Objective To demonstrate the advantages of four-dimensional contrast-enhanced ultrasonography(4DCEUS) over two-dimensional contrast-enhanced ultrasonography(2D-CEUS) in the diagnosis of liver tumors. Methods 4D- and 2D-CEUS images were obtained in 19 liver tissues from 17 patients.After a venous bolus injection of SonoVue,images of every phase were recorded,and a comparison between the two imaging techniques was made. Results In both 4D-CEUS and 2D-CEUS,primary carcinoma of the liver showed fast enhancement...