| Presentation | 2024-02-27 Nonlinear propagation of ultrasound in a liquid containing multiple bubbles coated by a visco-elastic shell Mayuko Ogi, Tatsuya Kanagawa, Ryoki Kawahata, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In ultrasound diagnosis, a bubble encapsulated by a shell composed of lipids, proteins, and polymers is utilized as a contrast agent to improve the image resolution. Physico-mathematical modeling of multiple (not single) bubbles is required. Appropriate choice of constitutive laws representing the functional form of stress-strain relationships for the shell is also important since some types of shell are used. This study theoretically investigated the effect of the differences among constitutive laws on ultrasound propagation in a liquid containing multiple bubbles encapsulated by the shell as a visco-elastic body. Nonlinear wave equations for three different constitutive laws were derived, and we summarized differences among them into only coefficients of the derived equations. As a result, differences among the constitutive laws affected the nonlinear coefficient of ultrasound. In particular, the constitutive law as a strain softening had the largest nonlinearity. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Ultrasound propagation / KdV--Burgers方程式 / constitutive law / Ultrasound contrast agent |
| Paper # | US2023-75 |
| Date of Issue | 2024-02-20 (US) |
| Conference Information | |
| Committee | US |
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| Conference Date | 2024/2/27(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tokyo Metropolitan Industrial Technology Research Institute (TIRI) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Acoustic imaging, NDT, Ultrasound in medicine, Ultrasonics, etc. |
| Chair | Yasuaki Watanabe(Tokyo Metropolitan Univ.) |
| Vice Chair | Kentaro Nakamura(Tokyo Inst. of Tech.) / Subaru Kudo(Ishinomaki Senshu Univ.) |
| Secretary | Kentaro Nakamura(Tohoku Univ.) / Subaru Kudo(Tokyo Metropolitan Univ.) |
| Assistant | Ayumu Osumi(Nihon Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Ultrasonics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Nonlinear propagation of ultrasound in a liquid containing multiple bubbles coated by a visco-elastic shell |
| Sub Title (in English) | Theoretical investigation of constitutive laws of shell |
| Keyword(1) | Ultrasound propagation |
| Keyword(2) | KdV--Burgers方程式 |
| Keyword(3) | constitutive law |
| Keyword(4) | Ultrasound contrast agent |
| 1st Author's Name | Mayuko Ogi |
| 1st Author's Affiliation | University of Tsukuba(Univ. of Tsukuba) |
| 2nd Author's Name | Tatsuya Kanagawa |
| 2nd Author's Affiliation | University of Tsukuba(Univ. of Tsukuba) |
| 3rd Author's Name | Ryoki Kawahata |
| 3rd Author's Affiliation | University of Tsukuba(Univ. of Tsukuba) |
| Date | 2024-02-27 |
| Paper # | US2023-75 |
| Volume (vol) | vol.123 |
| Number (no) | US-388 |
| Page | pp.pp.10-14(US), |
| #Pages | 5 |
| Date of Issue | 2024-02-20 (US) |