目的：研究鼻咽癌颈转移淋巴结的彩色多普勒血流信号特征。
Purpose: To study the characteristics of Color Doppler flow signal in cervical lymph nodes with metastasis from nasopharyngeal carcinoma.
彩色多普勒表现视网膜中央动脉(CRA)红色血流信号进入肿瘤内呈分支状。
Color Doppler imaging suggested red blood flow signal of central retinal artery (CRA) branched into tumor.
目的研究在彩色多普勒超声造影中肝实质性占位血流信号的改变。
Objective To evaluate the hemodynamic changes of the vascularity in hepatic focal lesions by color Doppler flow imaging techniques after intravenous injection of Levovist.
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