Radiation force calculation and acoustic power measurement for a cylindrical concave transducer based on the ray acoustic model

Yu, Lili; Shou, Wende; Hu, Chun; Hu, Bing

doi:10.3938/jkps.61.544

Cited by 3 publications

(1 citation statement)

References 16 publications

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“…( 19) based on the far-field integration model. This result can be applied for radiation force calculation acting on a totally absorbing target for a cylindrical concave transducer (Yu et al, 2012).…”

Section: Comparison Of Two Modelsmentioning

confidence: 99%

Archives of Acoustics

Yu,

Qiao,

Shou

et al. 2022

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Based on the ray acoustic model, a new relationship between the radiation force and the acoustic power is studied for a rectangular weakly focusing transducer. The effect of pressure reflection coefficient on this model is discussed. For a totally absorbing target, an approximate closed-form expression is also derived and the performance of this model is compared with that of the far-field integration model. The numerical results show that the agreement is excellent with these two models, which can be both used for correction of measured results, but the formula based on the ray acoustic model can be applied more widely in practice because of its simpler expression. The experimental results show further the effectiveness of the relationship between radiation force and acoustic power for rectangular weakly focusing transducer based on the ray acoustic model. The results presented in this paper are important for application of ultrasound transducers in therapy.

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Section: Comparison Of Two Modelsmentioning

confidence: 99%

Archives of Acoustics

Yu,

Qiao,

Shou

et al. 2022

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Nonlinear acoustic-power measurement based on fundamental focal axial vibration velocity for high-intensity focused ultrasound

Tao

et al. 2018

Journal of Applied Physics

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The acoustic power (AP) of high-intensity focused ultrasound (HIFU) shows great potential for ensuring the efficacy and safety of tumor treatment. By considering the energy of the harmonics, an easily applicable nonlinear AP measurement method for HIFU based on the fundamental focal axial vibration velocity (F-FAVV) is proposed. The focal pressures of the harmonics with respect to the surface vibration velocity are simulated, and a piecewise function of the required harmonic order is developed based on the 40-dB attenuation criterion of the harmonic-to-fundamental ratio. With the relationships between the power gain and the FAVVs of the harmonics, the dependence of AP on the F-FAVV is achieved by summing the harmonic powers. The APs of HIFU under various surface vibration velocities are verified by experimental measurements of the F-FAVV using a laser vibrometer and the corresponding integration results over the transducer surface. Good agreement between the numerical and experimental results demonstrates the feasibility of accurate AP measurement for HIFU using the F-FAVV and suggests the potential for applications in biomedical engineering.

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Acoustic Power Measurement for a Cylindrical Concave Transducer by using the Self-Reciprocity Method

2018

J. Korean Phys. Soc.

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Radiation force calculation and acoustic power measurement for a cylindrical concave transducer based on the ray acoustic model

Cited by 3 publications

References 16 publications

Archives of Acoustics

Archives of Acoustics

Nonlinear acoustic-power measurement based on fundamental focal axial vibration velocity for high-intensity focused ultrasound

Acoustic Power Measurement for a Cylindrical Concave Transducer by using the Self-Reciprocity Method

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