The following M—mode echocardiographic manifestations were noticed: 1. There appeared a fluttering and anteriorly moving lineal echo in the aortic lumen during systole;
其M型超声心动图表现为：1。主动脉腔内舒张期可见一条扑动的线性回声；
The simulation results indicate that the generated chaff echo of this method has the same distributions of the actual chaff echo. Thus it proves the correctness of this m…
仿真结果表明，该方法产生的箔条回波信号与箔条实际回波的各项分布特性相同，从而证明了该方法的正确性。
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