For the evaluation and characterization of ultrasonic contrast agents it is important to decide whether the received contrast is due to backscatter signals produced by microbubbles or other means without microbubbles. An experimental setup consisting of a combination of a bubble detection apparatus and a medical ultrasound scanner has been used to answer this question. The bubble detector monitors bubbles in the range from 0.75- mu m to 8- mu m radius, and the ultrasound scanner monitors the received backscatter signal during the experiment. Examples of both an experiment with backscatter from microbubbles and one without microbubbles are given.
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机译：对于超声波造影剂的评估和表征，重要的是决定所接收的对比度是否是由于通过微泡制造的反向散射信号或没有微泡的其他装置。由泡沫检测装置和医用超声扫描仪的组合组成的实验设置已被用于回答这个问题。气泡检测器监测到0.75 - MU M至8-MU M半径范围内的气泡，并且超声扫描仪在实验期间监视接收的反向散射信号。给出了来自微泡的反向散射和没有微泡的实验的实验。
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