中国物理B ›› 2016, Vol. 25 ›› Issue (4): 44301-044301.doi: 10.1088/1674-1056/25/4/044301

所属专题： Virtual Special Topic — Acoustics

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Study of the temperature rise induced by a focusing transducer with a wide aperture angle on biological tissue containing ribs

Xin Wang(王鑫), Jiexing Lin(林杰兴), Xiaozhou Liu(刘晓宙), Jiehui Liu(刘杰惠), Xiufen Gong(龚秀芬)   

  1. 1 Key Laboratory of Modern Acoustics, Institute of Acoustics and School of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China;
    2 State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2015-06-12 修回日期:2015-11-19 出版日期:2016-04-05 发布日期:2016-04-05
  • 通讯作者: Xiaozhou Liu E-mail:xzliu@nju.edu.cn
  • 基金资助:

    Project supported by the National Basic Research Program of China (Grant Nos. 2012CB921504 and 2011CB707902), the National Natural Science Foundation of China (Grant No. 11274166), the Fundamental Research Funds for the Central Universities, China (Grant No. 020414380001), the Fund from State Key Laboratory of Acoustics, Chinese Academy of Sciences (Grant No. SKLA201401), China Postdoctoral Science Foundation (Grant No. 2013M531313), and the Priority Academic Program Development of Jiangsu Higher Education Institutions and SRF for ROCS, SEM.

Study of the temperature rise induced by a focusing transducer with a wide aperture angle on biological tissue containing ribs

Xin Wang(王鑫)1, Jiexing Lin(林杰兴)1, Xiaozhou Liu(刘晓宙)1,2, Jiehui Liu(刘杰惠)1, Xiufen Gong(龚秀芬)1   

  1. 1 Key Laboratory of Modern Acoustics, Institute of Acoustics and School of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China;
    2 State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2015-06-12 Revised:2015-11-19 Online:2016-04-05 Published:2016-04-05
  • Contact: Xiaozhou Liu E-mail:xzliu@nju.edu.cn
  • Supported by:

    Project supported by the National Basic Research Program of China (Grant Nos. 2012CB921504 and 2011CB707902), the National Natural Science Foundation of China (Grant No. 11274166), the Fundamental Research Funds for the Central Universities, China (Grant No. 020414380001), the Fund from State Key Laboratory of Acoustics, Chinese Academy of Sciences (Grant No. SKLA201401), China Postdoctoral Science Foundation (Grant No. 2013M531313), and the Priority Academic Program Development of Jiangsu Higher Education Institutions and SRF for ROCS, SEM.

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摘要：

We used the spheroidal beam equation to calculate the sound field created by focusing a transducer with a wide aperture angle to obtain the heat deposition, and then we used the Pennes bioheat equation to calculate the temperature field in biological tissue with ribs and to ascertain the effects of rib parameters on the temperature field. The results show that the location and the gap width between the ribs have a great influence on the axial and radial temperature rise of multilayer biological tissue. With a decreasing gap width, the location of the maximum temperature rise moves forward; as the ribs are closer to the transducer surface, the sound energy that passes through the gap between the ribs at the focus decreases, the maximum temperature rise decreases, and the location of the maximum temperature rise moves forward with the ribs.

关键词: spheroidal beam equation, rib parameters, heat deposition, temperature field

Abstract:

We used the spheroidal beam equation to calculate the sound field created by focusing a transducer with a wide aperture angle to obtain the heat deposition, and then we used the Pennes bioheat equation to calculate the temperature field in biological tissue with ribs and to ascertain the effects of rib parameters on the temperature field. The results show that the location and the gap width between the ribs have a great influence on the axial and radial temperature rise of multilayer biological tissue. With a decreasing gap width, the location of the maximum temperature rise moves forward; as the ribs are closer to the transducer surface, the sound energy that passes through the gap between the ribs at the focus decreases, the maximum temperature rise decreases, and the location of the maximum temperature rise moves forward with the ribs.

Key words: spheroidal beam equation, rib parameters, heat deposition, temperature field

中图分类号:  (Nonlinear acoustics)

  • 43.25.+y
43.80.+p (Bioacoustics) 87.50.Y- (Biological effects of acoustic and ultrasonic energy)