|Table of Contents|

A Fast Field Testing Method for Focused Transducer(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2024年02期
Page:
20-27,49
Research Field:
电子科学与技术
Publishing date:

Info

Title:
A Fast Field Testing Method for Focused Transducer
Author(s):
Ma Ruisheng1; Li Wenyi1; Hu Jimin2; Li Yuzhi1; Guo Gepu1; Ma Qingyu1
(1.School of Computer and Electronic Information,Nanjing Normal University,Nanjing 210023,China)
(2.Jiangsu Institute of Medical Device Testing,Nanjing 210019,China)
Keywords:
acoustic field of focused transducer; dual-precision measurement in double planes; variable neighborhood search algorithm; performance parameter
PACS:
TB551
DOI:
10.3969/j.issn.1672-1292.2024.02.003
Abstract:
The high intensity focused ultrasound(HIFU)has shown great applied potential in non-invasive tumor treatment,and the focusing performance of the transducer plays a crucial role in the therapeutic effect. Hence,the accurate measurement of the focused acoustic field shows great significance to guarantee treatment accuracy of practical HIFU therapy. However,due to the limitation of fabrication technology and installation accuracy,some difference between the actual and ideal field of the focused transducer may be produced. In this paper,to solve the low-speed and low-accuracy of the traditional three-dimensional scanning,a rapid inspection method for focused acoustic field is proposed on the basis of the dual-precision measurement in double planes. The inclination angle range of the transducer is first determined by the extreme point in the focal distance based on the high-precision one-dimensional scanning along the ideal axis. And then,the pressure-peak position is accurately located in the cross section by applying the variable neighborhood search algorithm in both low and high precisions. The actual beam axis is further constructed by the pressure-peak points in double planes within the focal region,and the precise location of the focus is achieved. Finally,based on the high-precision axial and radial measurements in the actual focal plane,the performance parameters such as the focal field size,side lobe level,field symmetry and acoustic power are obtained. Compared with the experimental three-dimensional measurements,the measurement efficiency can be greatly enhanced by the proposed fast inspection method by over 100 times,with the advantages of high speed,flexible accuracy and comprehensive performance analysis. This study provides a new high-precision fast measurement technology for focused transducers,and exhibits prosperous perspectives in the inspection of ultrasonic therapeutic instruments.

References:

[1]GÉLAT P,SHAW A. Relationship between acoustic power and acoustic radiation force on absorbing and reflecting targets for spherically focusing radiators[J]. Ultrasound in Medicine & Biology,2015,41(3):832-844.
[2]RISCHMANN P,GELET A,RICHE B,et al. Focal high intensity focused ultrasound of unilateral localized prostate cancer:A prospective multicentric hemiablation study of 111 patients[J]. European Urology,2017,71(2):267-273.
[3]COTERO V,GRAF J,MIWA H,et al. Stimulation of the hepatoportal nerve plexus with focused ultrasound restores glucose homoeostasis in diabetic mice,rats and swine[J]. Nature Biomedical Engineering,2022,31(6):683-705.
[4]寿文德,余立立,胡济民,等. 使用辐射力天平的超声治疗换能器的电声特性测量方法研究[J]. 声学技术,2012,31(2):107-116.
[5]WILKENS V. Basic ultrasonic field measurement:Overview of standardized methods and expected developments[J]. The Journal of the Acoustical Society of America,2017,141(5):4007.
[6]YU L J,ZHENG H F. Research on sound power measurement of multi-element ultrasonic focusing transducer based on cross-spectrum method[J]. Review of Scientific Instruments,2021,92(11):115105.
[7]郭成成,姚磊,郑慧峰,等. 基于近场互谱法的医用聚焦超声场多参数检测[J]. 仪器仪表学报,2019,40(3):39-46.
[8]PARSONS J E,CAIN C A,FOWLKES J B. Cost-effective assembly of a basic fiber-optic hydrophone for measurement of high-amplitude therapeutic ultrasound fields[J]. The Journal of the Acoustical Society of America,2006,119(3):1432-1440.
[9]HE L P,ZHU F H,CHEN Y M,et al. Ultrasonic power measurement system based on acousto-optic interaction[J]. Review of Scientific Instruments,2016,87(5):231-239.
[10]SHEN B,ZENG B S,LIU X J,et al. Accuracy optimization method of ultrasonic power measurement system based on acousto-optic effect[J]. Optical Review,2021,28(2):207-214.
[11]XU Z,CHEN H,YAN X,et al. Quantitative calibration of sound pressure in ultrasonic standing waves using the Schlieren method[J]. Optics Express,2017,25(17):20401-20409.
[12]PRADERE C,GROZ M,ABISSET-CHAVANNE E,et al. 3D reconstruction of thermal volumetric sources from surface temperature fields measured by infrared thermography[C]//Proceedings of Thermosense:Thermal Infrared Applications XLII. Yokohama,Japan:SPIE,2020,11309:114090L.
[13]沈国峰,余瑛,张鹤林,等. 红外热成像聚焦超声声场测量方法综述[J]. 声学技术,2019,38(1):1-4.
[14]KHOKHLOVA V A,SHMELEVA S M,GAVRILOV L R,et al. Infrared mapping of ultrasound fields generated by medical transducers:Feasibility of determining absolute intensity levels[J]. The Journal of the Acoustical Society of America,2013,134(2):1586-1597.
[15]WEN S Z,JUN H B,HONG G C,et al. Organic axial stretching DFB fiber laser hydrophones:Theoretical and experimental study of eccentricity[J]. AIP Advances,2022,12(5):055026.
[16]ALDIABAT H,O'BRIEN P D,LIU D L,et al. Wideband transskull refocusing of ultrasound beams using dual-mode ultrasound arrays:Ex vivo results[J]. The Journal of the Acoustical Society of America,2018,143(3):1731.
[17]MARHENKE T,SANABRIA S J,CHINTADA B R,et al. Acoustic field characterization of medical array transducers based on unfocused transmits and single-plane hydrophone measurements[J]. Sensors,2019,19(4):863-880.
[18]MARTIN E,TREEBY B. Investigation of the repeatability and reproducibility of hydrophone measurements of medical ultrasound fields[J]. The Journal of the Acoustical Society of America,2019,145(3):1270-1282.
[19]YU L,YU L,ZHENG H,et al. Research on sound power measurement of multi-element ultrasonic focusing transducer based on cross-spectrum method[J]. Review of Scientific Instruments,2021,92(11):115105.
[20]HERRIN D W,MARTINUS F,WU T W,et al. An assessment of the high frequency boundary element and Rayleigh integral approximations[J]. Applied Acoustics,2006,67(8):819-833.
[21]JIANG Y J,ZHANG H,QIU Y M,et al. Givens coordinate descent methods for rotation matrix learning in trainable embedding indexes[J/OL]. arXiv Preprint arXiv:2203.05082,2022.
[22]GRULER A,QUINTERO-ARAUJO C,CALVET L,et al. Waste collection under uncertainty:a simheuristic based on variable neighborhood search[J]. European Journal of Industrial Engineering,2017,11(1):228-255.
[23]FAN C L,FU Q,LONG G Z,et al. Hybrid artificial bee colony algorithm with variable neighborhood search and memory mechanism[J]. Journal of Systems Engineering and Electronics,2018,29(2):405-414.
[24]KALATZANTONAKIS P,SIFALERAS A,SAMARAS N. A reinforcement learning-Variable neighborhood search method for the capacitated Vehicle Routing Problem[J]. Expert Systems with Applications,2022,213:118812.
[25]江湛,白景峰,余瑛. 应用LabVIEW的聚焦声场测量系统[J]. 中国医疗器械杂志,2014,38(3):181-185.

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Last Update: 2024-06-15