| Presentation | 2018-01-23 [Poster Presentation] Control of ultrasound propagation in cortical bone using time reversal technique Koki Takano, Masaya Saeki, Yoshiki Nagatani, Matsukawa Mami, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Recently, the Low Intensity Pulsed Ultrasound (LIPUS) has been attracting attention for the healing of bone fractures. Ultrasound irradiation from LIPUS can reduce the healing time of bone fractures. However, the ultrasound is not effectively irradiated because the actual sound field inside the body is not well understood. In this study, a time reversal wave technique was used to investigate the effective wave irradiation. A 3D heterogeneous cortical bone model was constructed using the longitudinal wave velocity distribution in a bovine radius. For the time reversal wave simulation, Finite Difference Time Domain (FDTD) method was used. In the first simulation, the wave transmitted from a point simulated bone fracture was observed above the bone surface. In the second simulation, the wave convergence at that point was investigated using time reversal waves. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | cortical bone / heterogeneity / time reversal wave / FDTD method |
| Paper # | US2017-86 |
| Date of Issue | 2018-01-16 (US) |
| Conference Information | |
| Committee | US / EA |
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| Conference Date | 2018/1/23(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Minoru Kurosawa(Tokyo Inst. of Tech.) / Suehiro Shimauchi(NTT) |
| Vice Chair | Nobuyuki Endoh(Kanagawa Univ.) / Shinichi Takeuchi(Toin Univ. of Yokohama) / Mitsunori Mizumachi(Kyutech) |
| Secretary | Nobuyuki Endoh(Univ. of Toyama) / Shinichi Takeuchi(Univ. of Tokyo) / Mitsunori Mizumachi(Akita Pref. Univ.) |
| Assistant | Takenobu Tsuchiya(Kanagawa Univ.) / TREVINO Jorge(Tohoku Univ.) / Nobutaka Ito(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Ultrasonics / Technical Committee on Engineering Acoustics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Poster Presentation] Control of ultrasound propagation in cortical bone using time reversal technique |
| Sub Title (in English) | |
| Keyword(1) | cortical bone |
| Keyword(2) | heterogeneity |
| Keyword(3) | time reversal wave |
| Keyword(4) | FDTD method |
| 1st Author's Name | Koki Takano |
| 1st Author's Affiliation | Doshisha University(Doshisha Univ.) |
| 2nd Author's Name | Masaya Saeki |
| 2nd Author's Affiliation | Doshisha University(Doshisha Univ.) |
| 3rd Author's Name | Yoshiki Nagatani |
| 3rd Author's Affiliation | Kobe City College of Technology(Kobe City Coll. Tech.) |
| 4th Author's Name | Matsukawa Mami |
| 4th Author's Affiliation | Doshisha University(Doshisha Univ.) |
| Date | 2018-01-23 |
| Paper # | US2017-86 |
| Volume (vol) | vol.117 |
| Number (no) | US-398 |
| Page | pp.pp.23-27(US), |
| #Pages | 5 |
| Date of Issue | 2018-01-16 (US) |