Reciprocity Calibration of Hydrophones in High Intensity Focused Ultrasound Field

Longyang Jia; Wende Shou; Bing Hu

doi:doi:10.11648/j.ajpa.20200802.11

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Reciprocity Calibration of Hydrophones in High Intensity Focused Ultrasound Field

Longyang Jia, Wende Shou, Bing Hu

Published in American Journal of Physics and Applications (Volume 8, Issue 2)

Received: 26 March 2020 Accepted: 22 April 2020 Published: 11 May 2020

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Abstract

The primary problem of safety and efficiency for the high intensity therapeutic ultrasound (HITU) is the acoustic measure and dose control. The key technique is the pressure and intensity in the acoustic field especial in the focal region using the small calibrated hydrophone. The calibration accuracy of the used hydrophone is very important for HITU. Although the small hydrophone calibration has realized but there was no report of the hydrophone calibration in high pressure field. In this paper, our objective is to develop an absolute calibration method for the measurement of free field voltage sensitivity of hydrophone for high intensity focused ultrasound. First the acoustic pressure at the focal point by the self-reciprocity method of spherically curved auxiliary transducer is calibrated, then the free field voltage sensitivity of hydrophone at the geometric focal point of the calibrated pressure is obtained. The spatial average effect of acoustic pressure on hydrophone surface at the focal point is theoretically modified, and the expression and value table of correction coefficient of spatial average effect of hydrophone are given. The maximum acoustic pressure measured at the focal point was up to 5.58MPa (1.02kW/cm²) and used to calibrate a hydrophone from 0.95 MHz to 1.10 MHz with maximum local distortion parameter 0.72. The results show the rationality and feasibility of the measurement principle and method.

Published in	American Journal of Physics and Applications (Volume 8, Issue 2)
DOI	10.11648/j.ajpa.20200802.11
Page(s)	19-24
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2020. Published by Science Publishing Group

Keywords

High Intensity Focused Ultrasound (HIFU), Self-reciprocity Method, Hydrophone Calibration

References

[1]	GB/T 32522-2016 Acoustics-Electroacoustic characteristics and measurements of piezoeletric focusing ultrasonic transducers (in Chinese) [S].
[2]	IEC TS 62903 Ed. 1.0-2018 Ultrasonics – Measurements of electroacoustical parameters and acoustic output power of spherically curved transducers using the self-reciprocity method [S].
[3]	W SHOU, J YAN, H WANG,. Free-field reciprocity calibration in a convergent spherical acoustic wave of a focusing transducer [J]. Chin. Phys. Lett., 19 (8): 1131-1136, 2002.
[4]	S Duan, W Shou, and P He et al., “ A novel method to measure acoustic power of focusing transducer with spherical surface based on self-reciprocity theorem,” Chinese Physics Letters, 22 (1): 146-149, 2005.
[5]	Shou W. D., Yu L. L., Duan S. M., et al, Research on electro-acoustic characteristics and measurements of spherically focusing transducer [J] (in Chinese), Technical Acoustics, 000 (005), 379-388, 2013.
[6]	G Z Xing, P Yang, W D Shou, M Wang, X J Feng, L B He, Hydrophone reciprocity calibration in spherically focused ultrasonic field from 1 MHz to 15 MHz [J], Acta Acustica united with Acustica, 105: 273-283, 2019.
[7]	GB/T 19890-2005 Acoustics- Measurements of acoustic power and field characteristics of high intensity focused ultrasound (HIFU), (in Chinese) [S].
[8]	Shaw A, tea Haar Gail, NPL REPORT DQL AC-015: Requirements for Measurement Standards in High Intensity Focused Ultrasound (HIFU) Fields, 2006. [S].
[9]	IEC REPORT 62649-2010: Ultrasonics-Requirements for Measurement Standard of High Intensity Therapeutic Ultrasound (FITU) Equipments. [S].
[10]	Granz B. PVDF hydrophone for the measurement of shock waves [J], International Symposium on Electrets. IEEE, 1988.
[11]	Robinson S, Preston R. PVDF reference hydrophone development in the UK-from fabrication and lamination to use as secondary standards [J]. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 47 (6): P. 1336-1344, 2000.
[12]	L Li, The study of hydrophone for the measurement of High intensity focused ultrasound and calibration techniques, ( Academic dissertation for MA. Eng in SJTU, China) 2003.
[13]	Gélat, Pierre, Shaw, A. Relationship between acoustic power and acoustic radiationforce on absorbing and reflecting targets for spherically focusing radiators [J]. Ultrasound Med Biol, 41 (3): 832-844, 2015.
[14]	Shou W, Huang X, Duan S, et al., Acoustic power measurement of high intensity focused ultrasound in medicine based on radiation force [J]. Ultrasonics, 44 (8): e17-e20, 2006.
[15]	Shou W, Recall HIFU measurement and talk about standard innovation [J] (in Chinese), International Medical Devices, 17 (2): 70-74, 2011.
[16]	IEC62127-1: 2013 Ultrasonics- Hydrophones- Prat1: Measurement and characteristics of medical ultrasonic fields up to 40 MHz. [S].

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APA Style

Longyang Jia, Wende Shou, Bing Hu. (2020). Reciprocity Calibration of Hydrophones in High Intensity Focused Ultrasound Field. American Journal of Physics and Applications, 8(2), 19-24. https://doi.org/10.11648/j.ajpa.20200802.11

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ACS Style

Longyang Jia; Wende Shou; Bing Hu. Reciprocity Calibration of Hydrophones in High Intensity Focused Ultrasound Field. Am. J. Phys. Appl. 2020, 8(2), 19-24. doi: 10.11648/j.ajpa.20200802.11

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AMA Style

Longyang Jia, Wende Shou, Bing Hu. Reciprocity Calibration of Hydrophones in High Intensity Focused Ultrasound Field. Am J Phys Appl. 2020;8(2):19-24. doi: 10.11648/j.ajpa.20200802.11

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@article{10.11648/j.ajpa.20200802.11,
  author = {Longyang Jia and Wende Shou and Bing Hu},
  title = {Reciprocity Calibration of Hydrophones in High Intensity Focused Ultrasound Field},
  journal = {American Journal of Physics and Applications},
  volume = {8},
  number = {2},
  pages = {19-24},
  doi = {10.11648/j.ajpa.20200802.11},
  url = {https://doi.org/10.11648/j.ajpa.20200802.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajpa.20200802.11},
  abstract = {The primary problem of safety and efficiency for the high intensity therapeutic ultrasound (HITU) is the acoustic measure and dose control. The key technique is the pressure and intensity in the acoustic field especial in the focal region using the small calibrated hydrophone. The calibration accuracy of the used hydrophone is very important for HITU. Although the small hydrophone calibration has realized but there was no report of the hydrophone calibration in high pressure field. In this paper, our objective is to develop an absolute calibration method for the measurement of free field voltage sensitivity of hydrophone for high intensity focused ultrasound. First the acoustic pressure at the focal point by the self-reciprocity method of spherically curved auxiliary transducer is calibrated, then the free field voltage sensitivity of hydrophone at the geometric focal point of the calibrated pressure is obtained. The spatial average effect of acoustic pressure on hydrophone surface at the focal point is theoretically modified, and the expression and value table of correction coefficient of spatial average effect of hydrophone are given. The maximum acoustic pressure measured at the focal point was up to 5.58MPa (1.02kW/cm2) and used to calibrate a hydrophone from 0.95 MHz to 1.10 MHz with maximum local distortion parameter 0.72. The results show the rationality and feasibility of the measurement principle and method.},
 year = {2020}
}

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TY  - JOUR
T1  - Reciprocity Calibration of Hydrophones in High Intensity Focused Ultrasound Field
AU  - Longyang Jia
AU  - Wende Shou
AU  - Bing Hu
Y1  - 2020/05/11
PY  - 2020
N1  - https://doi.org/10.11648/j.ajpa.20200802.11
DO  - 10.11648/j.ajpa.20200802.11
T2  - American Journal of Physics and Applications
JF  - American Journal of Physics and Applications
JO  - American Journal of Physics and Applications
SP  - 19
EP  - 24
PB  - Science Publishing Group
SN  - 2330-4308
UR  - https://doi.org/10.11648/j.ajpa.20200802.11
AB  - The primary problem of safety and efficiency for the high intensity therapeutic ultrasound (HITU) is the acoustic measure and dose control. The key technique is the pressure and intensity in the acoustic field especial in the focal region using the small calibrated hydrophone. The calibration accuracy of the used hydrophone is very important for HITU. Although the small hydrophone calibration has realized but there was no report of the hydrophone calibration in high pressure field. In this paper, our objective is to develop an absolute calibration method for the measurement of free field voltage sensitivity of hydrophone for high intensity focused ultrasound. First the acoustic pressure at the focal point by the self-reciprocity method of spherically curved auxiliary transducer is calibrated, then the free field voltage sensitivity of hydrophone at the geometric focal point of the calibrated pressure is obtained. The spatial average effect of acoustic pressure on hydrophone surface at the focal point is theoretically modified, and the expression and value table of correction coefficient of spatial average effect of hydrophone are given. The maximum acoustic pressure measured at the focal point was up to 5.58MPa (1.02kW/cm2) and used to calibrate a hydrophone from 0.95 MHz to 1.10 MHz with maximum local distortion parameter 0.72. The results show the rationality and feasibility of the measurement principle and method.
VL  - 8
IS  - 2
ER  -

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Author Information

Longyang Jia

Department of Ultrasound in Medicine, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
Wende Shou

Shanghai Institute of Ultrasound in Medicine, Shanghai, China
Bing Hu

Department of Ultrasound in Medicine, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China

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Plain Text BibTeX RIS

APA Style

Longyang Jia, Wende Shou, Bing Hu. (2020). Reciprocity Calibration of Hydrophones in High Intensity Focused Ultrasound Field. American Journal of Physics and Applications, 8(2), 19-24. https://doi.org/10.11648/j.ajpa.20200802.11

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ACS Style

Longyang Jia; Wende Shou; Bing Hu. Reciprocity Calibration of Hydrophones in High Intensity Focused Ultrasound Field. Am. J. Phys. Appl. 2020, 8(2), 19-24. doi: 10.11648/j.ajpa.20200802.11

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AMA Style

Longyang Jia, Wende Shou, Bing Hu. Reciprocity Calibration of Hydrophones in High Intensity Focused Ultrasound Field. Am J Phys Appl. 2020;8(2):19-24. doi: 10.11648/j.ajpa.20200802.11

Copy | Download

@article{10.11648/j.ajpa.20200802.11,
  author = {Longyang Jia and Wende Shou and Bing Hu},
  title = {Reciprocity Calibration of Hydrophones in High Intensity Focused Ultrasound Field},
  journal = {American Journal of Physics and Applications},
  volume = {8},
  number = {2},
  pages = {19-24},
  doi = {10.11648/j.ajpa.20200802.11},
  url = {https://doi.org/10.11648/j.ajpa.20200802.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajpa.20200802.11},
  abstract = {The primary problem of safety and efficiency for the high intensity therapeutic ultrasound (HITU) is the acoustic measure and dose control. The key technique is the pressure and intensity in the acoustic field especial in the focal region using the small calibrated hydrophone. The calibration accuracy of the used hydrophone is very important for HITU. Although the small hydrophone calibration has realized but there was no report of the hydrophone calibration in high pressure field. In this paper, our objective is to develop an absolute calibration method for the measurement of free field voltage sensitivity of hydrophone for high intensity focused ultrasound. First the acoustic pressure at the focal point by the self-reciprocity method of spherically curved auxiliary transducer is calibrated, then the free field voltage sensitivity of hydrophone at the geometric focal point of the calibrated pressure is obtained. The spatial average effect of acoustic pressure on hydrophone surface at the focal point is theoretically modified, and the expression and value table of correction coefficient of spatial average effect of hydrophone are given. The maximum acoustic pressure measured at the focal point was up to 5.58MPa (1.02kW/cm2) and used to calibrate a hydrophone from 0.95 MHz to 1.10 MHz with maximum local distortion parameter 0.72. The results show the rationality and feasibility of the measurement principle and method.},
 year = {2020}
}

Copy | Download

TY  - JOUR
T1  - Reciprocity Calibration of Hydrophones in High Intensity Focused Ultrasound Field
AU  - Longyang Jia
AU  - Wende Shou
AU  - Bing Hu
Y1  - 2020/05/11
PY  - 2020
N1  - https://doi.org/10.11648/j.ajpa.20200802.11
DO  - 10.11648/j.ajpa.20200802.11
T2  - American Journal of Physics and Applications
JF  - American Journal of Physics and Applications
JO  - American Journal of Physics and Applications
SP  - 19
EP  - 24
PB  - Science Publishing Group
SN  - 2330-4308
UR  - https://doi.org/10.11648/j.ajpa.20200802.11
AB  - The primary problem of safety and efficiency for the high intensity therapeutic ultrasound (HITU) is the acoustic measure and dose control. The key technique is the pressure and intensity in the acoustic field especial in the focal region using the small calibrated hydrophone. The calibration accuracy of the used hydrophone is very important for HITU. Although the small hydrophone calibration has realized but there was no report of the hydrophone calibration in high pressure field. In this paper, our objective is to develop an absolute calibration method for the measurement of free field voltage sensitivity of hydrophone for high intensity focused ultrasound. First the acoustic pressure at the focal point by the self-reciprocity method of spherically curved auxiliary transducer is calibrated, then the free field voltage sensitivity of hydrophone at the geometric focal point of the calibrated pressure is obtained. The spatial average effect of acoustic pressure on hydrophone surface at the focal point is theoretically modified, and the expression and value table of correction coefficient of spatial average effect of hydrophone are given. The maximum acoustic pressure measured at the focal point was up to 5.58MPa (1.02kW/cm2) and used to calibrate a hydrophone from 0.95 MHz to 1.10 MHz with maximum local distortion parameter 0.72. The results show the rationality and feasibility of the measurement principle and method.
VL  - 8
IS  - 2
ER  -

Copy | Download