Development of acoustical lens for catheter ultrasonic probe

导管超声探头声透镜的研制

• 批准号: 20500429
• 负责人: ENDOH Nobuyuki
• 金额: $ 2.75万
• 依托单位: Kanagawa University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20500429/
• 关键词: 超音波医科学; 音響レンズ; 超音波; 数値計算; カテーテル; 複合音響レンズ; 治療; 生体内温度分布; 温度上昇の精密測定; ファントム; カテーテル型探触子; 治療応用; 精密音場測定; 並列型計算処理

Acoustic lens has the possibility of improvement of acoustic characteristic of transducer not only in underwater application but also in medical application. The authors researched about the development of suitable acoustic designing method for catheter ultrasonic lens. A large acoustic lens composed of three-elements was firstly fabricated for underwater application. Specified acoustic lenses were basically designed by commercial available optical lens designing program. A 2D or 3D Finite Differential Time Domain (FDTD) method was used for wave-theoretical verification of acoustic characteristic of lenses in advance of fabrication. We can obtain fine images in water. In the second phase, the single midsize lens of 40mm whose scale factor was 10 was fabricated for catheter probe. The acoustic property was measured not only on normal incidence but also on oblique incidence. Calculated results agreed well with experimental results. We could obtain the acknowledges about lens designing method for catheter ultrasonic probe lens.

声透镜不仅在水下应用，而且在医学应用中都有改善换能器声学特性的可能。对导管超声透镜合适的声学设计方法进行了研究。首次制作了一种水下应用的大型三元声透镜。指定的声学透镜基本上是用市售光学透镜设计程序设计的。采用二维或三维时域有限差分（FDTD）方法在制作前对透镜的声学特性进行了波理论验证。我们可以在水中获得精细的图像。在第二阶段，制作单个40mm的中型透镜，其比例因子为10，用于导管探头。不仅测量了正入射声特性，还测量了斜入射声特性。计算结果与实验结果吻合较好。对导管超声探头透镜的设计方法有一定的认识。

项目成果

Comparison of Sound Pressure Distribution Determined by Numerical Analysis and Scaled-Up Experiment for Small Ultrasonic Probe with Lens

• DOI: 10.1143/jjap.48.07gk10
• 发表时间: 2009-07
• 期刊: Japanese Journal of Applied Physics
• 影响因子: 1.5
• 作者: T. Tsuchiya;S. Matsumoto;Fumitaka Naitou;Mari Takahashi;N. Endoh

Development of four-dimension wide view imaging and surveying system

四维宽视角成像测量系统研制

• 发表时间: 2010
• 作者: S.Matsumoto;T.Tsuchiya;N. Endoh;et.al.
• 通讯作者: et.al.

Analysis of Pulse Wave Propagation in The Antarctic Ocean Using Parabolic Equation Method

抛物线方程法分析南极海洋脉搏波传播

• 发表时间: 2009
• 作者: T.Tsuchiya;T.Anada;N.Endoh
• 通讯作者: N.Endoh

Sutdy on Geometric Evaluation Method of Underwater Acoustic Lens

水声透镜几何评价方法研究

• 发表时间: 2009
• 作者: S.Matsumoto;N.Takeyama;T.Tsuchiya,;N.Endoh
• 通讯作者: N.Endoh

Numerical Simulation of Target Range Estimation Using Ambient Noise Imaging with Acoustic Lens

利用声透镜环境噪声成像进行目标距离估计的数值模拟

• DOI: 10.1143/jjap.49.07hg01
• 发表时间: 2010
• 期刊: Japanese Journal of Applied Physics
• 影响因子: 1.5
• 作者: K. Mori;H. Ogasawara;T. Nakamura;T. Tsuchiya;N. Endoh
• 通讯作者: N. Endoh