Effect of focus splitting on ultrasound propagation through the rib cage in focused ultrasound surgery

J. Gao, S. Cochran, Z. Huang, L. Shi, A. Volovick

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    2 Citations (Scopus)

    Abstract

    The presence of the rib cage is a significant hindrance to the clinical applicability of focused ultrasound surgery for various internal organs, including liver, kidney, and pancreas. The main problems associated with the rib cage are considered to be: the strong reflections that occur at the soft tissue/rib interfaces; the highly attenuating effect of the ribs; and the scattering and diffraction that occur at the ribs boundaries. In this study, a 2D high speed ultrasound scanning system was used to directly measure the acoustic field in the focal plane after propagation of focused ultrasound through an acoustic absorber rib-mimicking material and an epoxy rib-mimicking material. Numerical simulations were also performed with finite element analysis software (PZFlex, Weidlinger Associates, USA) to investigate the changes in the acoustic field with different anatomical configurations. Briefly, due to the defocusing nature of the rib-mimics, the acoustic pressure level at the focus was substantially reduced. This study quantitatively analyzed the effect of focus splitting associated with the ribs to provide reference information for further clinical applications.
    Original languageEnglish
    Title of host publicationProceedings - 2011 4th International Conference on Biomedical Engineering and Informatics, BMEI 2011
    PublisherIEEE Computer Society
    Pages2327-2330
    Number of pages4
    Volume4
    ISBN (Print)9781424493517
    DOIs
    Publication statusPublished - 2011
    Event4th International Conference on Biomedical Engineering and Informatics - Shanghai, China
    Duration: 15 Oct 201117 Oct 2011
    http://www.ieee.org/conferences_events/conferences/conferencedetails/index.html?Conf_ID=18206

    Conference

    Conference4th International Conference on Biomedical Engineering and Informatics
    Abbreviated titleBMEI 2011
    CountryChina
    CityShanghai
    Period15/10/1117/10/11
    Internet address

    Fingerprint

    surgery
    propagation
    acoustics
    pancreas
    defocusing
    kidneys
    liver
    organs
    absorbers
    high speed
    computer programs
    scanning
    configurations
    scattering
    diffraction
    simulation

    Cite this

    Gao, J., Cochran, S., Huang, Z., Shi, L., & Volovick, A. (2011). Effect of focus splitting on ultrasound propagation through the rib cage in focused ultrasound surgery. In Proceedings - 2011 4th International Conference on Biomedical Engineering and Informatics, BMEI 2011 (Vol. 4, pp. 2327-2330). IEEE Computer Society. https://doi.org/10.1109/BMEI.2011.6098765
    Gao, J. ; Cochran, S. ; Huang, Z. ; Shi, L. ; Volovick, A. / Effect of focus splitting on ultrasound propagation through the rib cage in focused ultrasound surgery. Proceedings - 2011 4th International Conference on Biomedical Engineering and Informatics, BMEI 2011. Vol. 4 IEEE Computer Society, 2011. pp. 2327-2330
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    abstract = "The presence of the rib cage is a significant hindrance to the clinical applicability of focused ultrasound surgery for various internal organs, including liver, kidney, and pancreas. The main problems associated with the rib cage are considered to be: the strong reflections that occur at the soft tissue/rib interfaces; the highly attenuating effect of the ribs; and the scattering and diffraction that occur at the ribs boundaries. In this study, a 2D high speed ultrasound scanning system was used to directly measure the acoustic field in the focal plane after propagation of focused ultrasound through an acoustic absorber rib-mimicking material and an epoxy rib-mimicking material. Numerical simulations were also performed with finite element analysis software (PZFlex, Weidlinger Associates, USA) to investigate the changes in the acoustic field with different anatomical configurations. Briefly, due to the defocusing nature of the rib-mimics, the acoustic pressure level at the focus was substantially reduced. This study quantitatively analyzed the effect of focus splitting associated with the ribs to provide reference information for further clinical applications.",
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    Gao, J, Cochran, S, Huang, Z, Shi, L & Volovick, A 2011, Effect of focus splitting on ultrasound propagation through the rib cage in focused ultrasound surgery. in Proceedings - 2011 4th International Conference on Biomedical Engineering and Informatics, BMEI 2011. vol. 4, IEEE Computer Society, pp. 2327-2330, 4th International Conference on Biomedical Engineering and Informatics, Shanghai, China, 15/10/11. https://doi.org/10.1109/BMEI.2011.6098765

    Effect of focus splitting on ultrasound propagation through the rib cage in focused ultrasound surgery. / Gao, J.; Cochran, S.; Huang, Z.; Shi, L.; Volovick, A.

    Proceedings - 2011 4th International Conference on Biomedical Engineering and Informatics, BMEI 2011. Vol. 4 IEEE Computer Society, 2011. p. 2327-2330.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

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    AB - The presence of the rib cage is a significant hindrance to the clinical applicability of focused ultrasound surgery for various internal organs, including liver, kidney, and pancreas. The main problems associated with the rib cage are considered to be: the strong reflections that occur at the soft tissue/rib interfaces; the highly attenuating effect of the ribs; and the scattering and diffraction that occur at the ribs boundaries. In this study, a 2D high speed ultrasound scanning system was used to directly measure the acoustic field in the focal plane after propagation of focused ultrasound through an acoustic absorber rib-mimicking material and an epoxy rib-mimicking material. Numerical simulations were also performed with finite element analysis software (PZFlex, Weidlinger Associates, USA) to investigate the changes in the acoustic field with different anatomical configurations. Briefly, due to the defocusing nature of the rib-mimics, the acoustic pressure level at the focus was substantially reduced. This study quantitatively analyzed the effect of focus splitting associated with the ribs to provide reference information for further clinical applications.

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    Gao J, Cochran S, Huang Z, Shi L, Volovick A. Effect of focus splitting on ultrasound propagation through the rib cage in focused ultrasound surgery. In Proceedings - 2011 4th International Conference on Biomedical Engineering and Informatics, BMEI 2011. Vol. 4. IEEE Computer Society. 2011. p. 2327-2330 https://doi.org/10.1109/BMEI.2011.6098765