关键词:声学造影;肾肿瘤;二次谐波显像
摘 要 目的:探讨氟碳微泡造影剂对肾VX2肿瘤显影的增强效果及不同显像方式、造影剂量对造影效果的影响。方法:10只新西兰兔,右肾植有VX2肿瘤,共28个结节。经外周静脉注射氟碳微泡造影剂0.05、0.1、0.2ml/kg,分别用基波显像和二次谐波显像观察造影效果。结果:造影使肾肿瘤的检出率明显增加,由造影前的4/28提高到基波显像的15/28和谐波显像的21/28。二次谐波显像造影效果优于基波显像,在0.1ml/kg造影时,肿瘤组织与肾皮质间的视频密度差值分别为90.60±7.75,45.0±5.95,差异显著(P<0.01),随造影剂量的增加造影效果增强。结论:氟碳声学造影剂能提高超声对肾肿瘤的诊断,二次谐波显像优于基波显像,有剂量-效应关系。
Assessmentof Renal VX2 Tumors by Intravenous Contrast Ultrasonography
Niu Haiyan Jian Wenhao Liu Zheng
Dept.Ultrasound, Beijing General Hospital of PLA,Beijing 100700 China
ABSTRACT Objective:To investigate the efficacy ofintravenous contrast ultrasonography in renal VX2 tumors.Methods:There were 28 nodules inten rabbit kidneys transplanted VX2 tumor.Perfluorocarbon-filled microbubbles wereadministered through ear veins at 0.05、0.1、0.2ml/kg ......
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