Development of flexible acoustic transmission line for intravascular ultrasonography
Development of flexible acoustic transmission line for intravascular ultrasonography
复制标题
血管内超声检查用柔性声传输线的研制
DOI：
10.1109/ultsym.2000.921544
复制
发表时间：
2000
期刊：
影响因子：
--
通讯作者：
Yoshikatsu Tanahashi
中科院分区：
文献类型：
--
作者：
Tadash Moriya;Zhiqiang Hu;Yoshikatsu Tanahashi
制备涂覆有碳薄膜的熔融石英棒并测试其超声透射。该杆的直径为125 /spl mu/m，长60 cm。棒的两端都被抛光。PZT传感器连接在一端，另一端保持开放。将频率在3和30 MHz之间的电突发波施加到换能器，换能器产生相应的超声信号，并观察接收到的信号。结果表明，在3-24 MHz频率范围内，Pochhammer-Chree波在直径为125 μ m/s的试棒中传播的L（0，1）模。在20-24 MHz的频率范围内观察到大的色散。在8 MHz时，该线的衰减常数小于1dB/m。使用该棒制成直径为3厘米的线圈，并进行相同的实验。实验结果与直棒相似。
A fused quartz rod coated with a thin film of carbon was prepared and tested for ultrasound transmission. The rod was 125 /spl mu/m in diameter and 60 cm long. Both ends of the rod were polished. A PZT transducer was attached at one end, and the other end was kept open. An electrical burst wave with a frequency of between 3 and 30 MHz was applied to the transducer, which generated a correspond ultrasonic signal, and the received signal was observed. It was shown that the L(0,1) mode of the Pochhammer-Chree wave propagated in the 125 /spl mu/m diameter test rod in the frequency range 3-24 MHz. A large dispersion was observed in the frequency range 20-24 MHz. The attenuation constant of the line was estimated to be less than 1 dB/m at 8 MHz. A coil with a diameter of 3 cm was made using the rod, and the same experiment was conducted. The experimental results were similar to that for the straight rod.