| Presentation | 2021-09-24 Fundamental study of quantitative evaluation of fat ratio by photoacoustic imaging Nayu Kiuchi, Takeshi Namita, Kengo Kondo, Makoto Yamakawa, Tsuyoshi Shiina, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Quantification of fat rate in liver is useful for early detection of liver disease. Photoacoustic (PA) imaging is expected for applying to evaluate fat rate in liver. To realize evaluation of fat rate, we developed handheld PA system with tunable wavelength laser. In this study, we verified the usefulness of the system for estimate fat rate by analyzing PA spectra. We acquired PA spectra of a biological sample. To estimate fat rate using photoacoustic methods, the photoacoustic signal intensity ratio between 900 nm and 1210 nm was calculated. To validate the results, we use model mice in ex vivo experiments. The photoacoustic signal intensity ratio was positively correlated with the fat area rate which was calculated by chromatic figure of mice. From these analyses, the advantage of PA spectra for evaluation of fat rate, and the feasibility of our system for early detection of fatty liver were demonstrated. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Liver disease / Fatty liver / Early detection / Optoacoustic imaging / Quantification of fat rate |
| Paper # | US2021-37 |
| Date of Issue | 2021-09-17 (US) |
| Conference Information | |
| Committee | US |
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| Conference Date | 2021/9/24(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Photoacoustics, Ultrasound in medicine, Ultrasonics, etc. |
| Chair | Yoshikazu Koike(Shibaura Inst. of Tech.) |
| Vice Chair | Hikaru Miura(Nihon Univ.) / Kentaro Nakamura(Tokyo Inst. of Tech.) |
| Secretary | Hikaru Miura(Tohoku Univ.) / Kentaro Nakamura(Chiba Univ.) |
| Assistant | Shin Yoshizawa(Tohoku 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) | Fundamental study of quantitative evaluation of fat ratio by photoacoustic imaging |
| Sub Title (in English) | |
| Keyword(1) | Liver disease |
| Keyword(2) | Fatty liver |
| Keyword(3) | Early detection |
| Keyword(4) | Optoacoustic imaging |
| Keyword(5) | Quantification of fat rate |
| 1st Author's Name | Nayu Kiuchi |
| 1st Author's Affiliation | Kyoto University(Kyoto Univ.) |
| 2nd Author's Name | Takeshi Namita |
| 2nd Author's Affiliation | Kyoto University(Kyoto Univ.) |
| 3rd Author's Name | Kengo Kondo |
| 3rd Author's Affiliation | Kyoto University(Kyoto Univ.) |
| 4th Author's Name | Makoto Yamakawa |
| 4th Author's Affiliation | Kyoto University(Kyoto Univ.) |
| 5th Author's Name | Tsuyoshi Shiina |
| 5th Author's Affiliation | Kyoto University(Kyoto Univ.) |
| Date | 2021-09-24 |
| Paper # | US2021-37 |
| Volume (vol) | vol.121 |
| Number (no) | US-182 |
| Page | pp.pp.18-22(US), |
| #Pages | 5 |
| Date of Issue | 2021-09-17 (US) |