Acoustic focusing to the waveguides utilizing double parabolic reflectors
Acoustic focusing to the waveguides utilizing double parabolic reflectors
复制标题
利用双抛物面反射器将声波聚焦到波导
DOI：
10.1063/1.5086086
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发表时间：
2018
影响因子：
4
通讯作者：
T. Morita
中科院分区：
文献类型：
--
作者：
Kang Chen;T. Irie;T. Iijima;T. Morita
超声成像换能器在穿透深度和成像分辨率之间存在严重的性能折衷设计，这使得在大深度器官中疾病的检测精度降低。为了解决这个问题，本研究结合压电换能器与波导技术，实现侵入性成像。然而，具有波导的常规配置遭受低输入能量或低能量传输效率，因此导致提出双抛物面反射器聚焦和引导机构以实现高功率传输。在这封信中，三种不同的物理配置的超声波传播波导的声压，功率和传播模式进行了比较。与传统的机制相比，所提出的机制与双抛物面反射器的圆柱形波导的尖端处的声压提高到超过17倍，并增加总功率流到约213倍。超声成像换能器在穿透深度和成像分辨率之间存在严重的性能折衷设计，这使得在大深度器官中疾病的检测精度降低。为了解决这个问题，本研究结合压电换能器与波导技术，实现侵入性成像。然而，具有波导的常规配置遭受低输入能量或低能量传输效率，因此导致提出双抛物面反射器聚焦和引导机构以实现高功率传输。在这封信中，三种不同的物理配置的超声波传播波导的声压，功率和传播模式进行了比较。与传统的机制相比，所提出的机制与双抛物面反射器的圆柱形波导的尖端处的声压提高到超过17倍，并增加总功率流到约213倍。由于上级...
Ultrasound imaging transducers possess serious trade-off design in performances between the penetration depth and the imaging resolution, which loses detection accuracy of diseases in large and deep-depth organs. To ease this problem, this study combines a piezoelectric transducer with the waveguide technique to realize invasive imaging. However, conventional configurations with waveguides suffer from low input energy or low energy transmission efficiency, thus leading to the proposal of the double-parabolic-reflector focusing and guiding mechanism to achieve high power transmission. In this letter, three different physical configurations of waveguides for ultrasound propagation are compared in terms of acoustic pressure, power, and propagation modes. The proposed mechanism with double parabolic reflectors enhances the acoustic pressure at the tip of the cylindrical waveguide to over 17 times compared to the conventional mechanism and increases the total power flow to around 213 times. Due to the superior performances in powerful ultrasound transmission, the proposal is expected to widen the applications in ultrasound imaging, ultrasound therapeutics, and ultrasound microscopy.Ultrasound imaging transducers possess serious trade-off design in performances between the penetration depth and the imaging resolution, which loses detection accuracy of diseases in large and deep-depth organs. To ease this problem, this study combines a piezoelectric transducer with the waveguide technique to realize invasive imaging. However, conventional configurations with waveguides suffer from low input energy or low energy transmission efficiency, thus leading to the proposal of the double-parabolic-reflector focusing and guiding mechanism to achieve high power transmission. In this letter, three different physical configurations of waveguides for ultrasound propagation are compared in terms of acoustic pressure, power, and propagation modes. The proposed mechanism with double parabolic reflectors enhances the acoustic pressure at the tip of the cylindrical waveguide to over 17 times compared to the conventional mechanism and increases the total power flow to around 213 times. Due to the superior...
影响因子：
4.2
作者：
Lam, Kwok Ho;Ji, Hong Fen;Zheng, Fan;Ren, Wei;Zhou, Qifa;Shung, K. Kirk
通讯作者：
Shung, K. Kirk
影响因子：
13.1
作者：
Astaneh, Ali Vaziri;Guddati, Murthy N.
通讯作者：
Guddati, Murthy N.