高强度聚焦超声换能器焦点峰值声压联合定征方法

doi:10.3969/j.issn.1000-1158.2024.11.17

摘要
图/表
参考文献(25)
相关文章 (14)

全文: PDF (538 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要采用实验测量与理论计算相结合的方式,提出一种高强度聚焦超声换能器焦点峰值声压联合定征方法。对于孔径60mm、焦距75mm的聚焦超声换能器,在水中测量并仿真模拟线性压力波形,修正得到聚焦超声换能器的有效孔径和焦距。在高强度激励下对调整后的换能器模型进行数值计算,用零相位滤波器不失真地得到各谐波的初始相位信息,发现二次谐波、三次谐波相对基波的相对相位量随激励强度基本不变。利用光纤水听器对高强度聚焦超声换能器的各次谐波声压幅值的测量,结合仿真分析得到相位关系,各次谐波叠加得到焦点峰值声压。聚焦超声换能器在峰峰值电压V_p-p为250V激励下,焦点正峰值声压为7.56MPa,负峰值声压为－4.98MPa。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章

关键词 ：声学计量, 高强度聚焦超声, 焦点, 峰值声压, 联合定征, 非线性声场

Abstract：A method to determine the focal peak sound pressure of the high intensity focused ultrasound field was proposed. Under low amplitude linear propagation conditions, linear pressure waveforms were measured and modeled in water a focused transducer with nominal aperture of 60mm and focal length of 75mm. The corrected parameters input to a Westervelt numerical model were determined based on experimental low amplitude beam plots. The simulated nonlinear waveforms at the focus were obtained, which were distorted strongly with a discrepancy between the peak compressional and rarefactional pressures. The first three harmonics were extracted from the distorted wave by a zero-phase band-pass filter, showing that the relative phases almost keep constant as the source pressure increases. Measurements were performed with a fiber optic probe hydrophone as the focused transducer driving with high-energy. Combined the measured pressure amplitudes with simulated phases of first three harmonics, the peak sound pressure at the focus was obtained. For this focused transducer driving in 250V_p-p, its peak compressional pressure is 7.56MPa, and rarefactional pressure is 4.98MPa.

Key words： acoustic metrology high intensity focused ultrasound focus peak sound pressure combined approach nonlinear ultrasonics

收稿日期: 2024-04-03 发布日期: 2024-11-29

PACS:

TB95

基金资助:浙江省基础公益计划(LGF22A040005,TGC23A040003);浙江省重点研发计划(2022C01002);市场监督管理总局计划(KJLJ202310,2022MK046,2023MK048);浙江省市场监督管理局科技计划(CY2022216,CY2022001,ZD2024007,ZC2023015)

通讯作者: 朱怀球(1966-),浙江杭州人,浙江省质量科学研究院正高级工程师,从事精密测量研究。Email: zhq_hz@163.com E-mail: zhq_hz@163.com

作者简介: 吴德林(1991-),江西赣州人,浙江省质量科学研究院副研究员,从事超声计量测试研究。Email: wdl19911218@126.com

引用本文:

吴德林,张亨达,朱怀球,吴键,高申平,王宏远,俞醒言,郑音飞,姚磊. 高强度聚焦超声换能器焦点峰值声压联合定征方法[J]. 计量学报, 2024, 45(11): 1718-1723.
WU Delin,ZHANG Hengda,ZHU Huaiqiu,WU Jian,GAO ShenpingWANG Hongyuan,YU Xingyan,ZHENG Yinfei,YAO Lei. A Combined Measurement and Modeling Approach for Characterization of the Peak Sound Pressure at the Focus of High Intensity Focused Ultrasound Fields. Acta Metrologica Sinica, 2024, 45(11): 1718-1723.

链接本文:

http://jlxb.china-csm.org:81/Jwk_jlxb/CN/10.3969/j.issn.1000-1158.2024.11.17 或 http://jlxb.china-csm.org:81/Jwk_jlxb/CN/Y2024/V45/I11/1718

［1］	HAAR G T, COUSSIOS C. High intensity focused ultrasound: Physical principles and devices ［J］. International Journal of Hyperthermia, 2009, 23(2): 89-104.
［8］	刘海楠, 赵鹏, 叶晓同, 等. 基于近场声全息的聚焦换能器声场测量方法研究［J］. 计量学报, 2021, 42(6): 780-784
［9］	陈涛. 测量与理论模型结合方法定征高强度聚焦超声非线性声场［D］. 南京:南京大学, 2014.
［10］	郑慧峰, 曹文旭, 王月兵, 等. 基于经验模态分解的聚焦超声非线性声场检测［J］. 计量学报, 2017, 38(5): 616-620.
［18］	WIKENS V, KOCH C. Fiber-optic multilayer hydrophone for ultrasonic measurement ［J］. Ultrasonics, 1999,37(8): 45-49.
［4］	PENG Z F, LIN W J, LIU S L, et al. Phase Relation of Harmonics in Nonlinear Focused Ultrasound ［J］. Chinese Physics Letters, 2016, 33(8): 54-58.
［6］	BLOOMFIELD P E, GANDHI G, LEWIN P A. Membrane Hydrophone Phase Characteristics Through Nonlinear Acoustics Measurements ［J］. IEEE transactions on ultrasonics, ferroelectrics, and frequency control, 2011, 58(11): 2418-2437.
	LIU H N, ZHAO P, YE X T, et al. Research on Sound Field Measurement Method for Focused Transducers Based on Near Field Acoustic Holography ［J］. Acta Metrologica Sinica, 2021, 42(6): 780-784.
［12］	XING G Z, WILKENS V, YANG P. Review of field characterization techniques for high intensity therapeutic ultrasound ［J］. Metrologia, 2021, 58(2): 022001.
［14］	WILKENS V, SONNTAG S, GEORG O. Robust spot-poled membrane hydrophones for measurement of large amplitude pressure waveforms generated by high intensity therapeutic ultrasonic transducers ［J］. The Journal of the Acoustical Society of America, 2016, 139(3): 1319-1332.
［16］	WANG Y B, YE F W. The Measurement of HIFU Field Using a Reflective Needle Hydrophone ［C］//Proceedings of the International Symposium on Therapeutic Ultrasound, Seoul, Korea, 2007.
［17］	徐遨璇, 曹永刚, 郑慧峰, 等. 基于反射探针的聚焦超声测量传感器设计和方法研究［J］. 计量学报, 2021, 42 (2): 204-212.
	GENG H, QIU Y Y, ZHANG D. Nonlinear acoustic field modeling of spherical cavity focused transducers ［J］. Acta Acustica, 2014, 39(3): 380-384.
［7］	HALLER J, JENDERKA K-V, DURANDO G, et al. A comparative evaluation of three hydrophones and a numerical model in high intensity focused ultrasound fields ［J］. The Journal of the Acoustical Society of America, 2012, 131(2): 1121-1130.
［15］	MARTIN WEBER V W. HIFU Waveform Measurement at Clinical Amplitude Levels: Primary Hydrophone Calibration, Waveform Deconvolution and Uncertainty Estimation ［C］//IEEE International Ultrasonics Sympo-sium, Washington DC, USA. 2017: 1-4
［22］	WEBER M, WILKENS V. Using a heterodyne vibrometer in combination with pulse excitation for primary calibration of ultrasonic hydrophones in amplitude and phase ［J］. Metrologia, 2017, 54(4): 432-444.
［23］	KOCH C, WILKENS V. Phase calibration of hydrophones: heterodyne time-delay spectrometry and broadband pulse technique using an optical reference hydrophone ［J］. Journal of Physics Conference, 2004, 1: 14-19.
［25］	WU D L, YAO L, PING G S, et al. Numrical Simulation of Nonlinear Focused Ultrasound ［C］// Proceedings of the 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications, Shijiazhuang, China, 2019: 1-5.
［2］	YULDASHEV P V, MEZDROKHIN I S, KHOKHLOVA V A. Wide-Angle Parabolic Approximation for Modeling High-Intensity Fields from Strongly Focused Ultrasound Transducers ［J］. Acoustical Physics, 2018, 64(3): 309-319.
［5］	MAKOV Y N, SANCHEZ-MORCILLO V J, CAMARENA F, et al. Nonlinear change of on-axis pressure and intensity maxima positions and its relation with the linear focal shift effect ［J］. Ultrasonics, 2008, 48(8): 678-686.
	ZHENG H F, CAO W X, WANG Y B, et al. Detection of Focused Ultrasonic Nonlinear Sound Field Based on Empirical Mode Decomposition ［J］. Acta Metrologica Sinica, 2017, 38(5): 616-620.
［13］	HARRIS G R, HOWARD S M, HURRELL A M, et al. Hydrophone Measurements for Biomedical Ultrasound Applications: A Review ［J］. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2023, 70(2): 85-100.
［19］	MORRIS P, HURRELL A, SHAW A, et al. A Fabry Perot fiberoptic ultrasonic hydrophone for the simultaneous measurement of temperature and acoustic pressure ［J］. Journal of the Acoustical Society of America, 2009, 125(6): 3611-3622.
［21］	CANNEY M S, BAILEY M R, CRUM L A, et al. Acoustic characterization of high intensity focused ultrasound fields: A combined measurement and modeling approach ［J］. The Journal of the Acoustical Society of America, 2008, 124(4): 2406-2420.
［3］	XING G Z, YANG P, HU P C, et al. Field characterization of steady state focused transducers using hydrophones based on Fresnel approximation ［J］. Measurement Science and Technology, 2017, 28(6): 1-9.
［11］	ZANELLI C I, HOWAR S M. A Robust Hydrophone for HIFU Metrology ［C］// Proceedings of the International Symposium on Therapeutic Ultrasound, Oxford, UK, 2006.
［20］	耿昊, 邱媛媛, 章东. 球形腔聚焦换能器的非线性声场建模［J］. 声学学报, 2014, 39(3): 380-384.
	XU A X, CAO Y G, ZHENG H F, et al. Study on the design and method of focused ultrasonic measurement sensor based on reflection probe ［J］. Acta Metrologica Sinica, 2021, 42 (2): 204-212.
［24］	WU D L, GAO S P, LI J, et al. Amplitude and phase relation of harmonics in nonlinear focused ultrasound ［J］. AIP Advances, 2022, 12(065317): 1-6.