目的：探讨分析声学造影剂肝静脉显影时间诊断不同时期肝硬化的价值。
Objective: To assess the value of sonographic of contrast agent appearing in hepatic vein in diagnosing the stages of liver cirrhosis.
对比分析声学造影移植肾急性排斥和急性肾小管坏死血流灌注变化特点，探讨该方法对移植肾并发症鉴别诊断的可能性。
To analyse changes of blood perfusion ar and ATN comparison by contrast ultrasound and explore the feasibility of distinguishing diagnoses of renal allograft complication using the new method.
美国科学家分析了装在虎鲨上的声学信号传送器中储存的数据，发现他们能够到各处直来直去。
US-based scientists analysed data from tiger sharks tagged with acoustic transmitters, and found that they took directed paths from place to place.
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