| Presentation | 2009-06-05 In-vivo Measurement of Dielectric Properties for Humane-Body Tissue Yusuke SATO, Akimasa HIRATA, Osamu FUJIWARA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | It is indispensable to measure the dielectric properties of human tissues for the safety evaluation of electromagnetic field exposures, while in-vivo measurement of specified tissues in the frequency domain is not easy to conduct. In this study, using a network analyzer and an open-ended coaxial probe (Agilent probe), we made in-vivo measurement of complex relative permittivity for forehead, abdomen and forearm in the frequency range from 100MHz to 40GHz, and compared the results with those calculated from a formula proposed by Gabriel. As a result, we found that the Agilent method enables one to measure the complex relative permittivity mainly for skin tissue at frequencies below 1GHz but composite tissue consisting of skin, fat and muscle at frequencies above 10GHz. In order to understand this finding, we measured the dielectric constant of silicon sheet with respect to the thickness, which was placed on foam polystyrene or an aluminum plate. The result revealed that the Agilent method employs the first 40-ps waveform reflected from the surface of the silicon sheet to calculate the complex relative permittivity, which allows one to qualitatively explain the in-vivo measurement results. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Electromagnetic field exposure / SAR / relative complex permittivity / in-vivo measurement |
| Paper # | EMCJ2009-33 |
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| Conference Information | |
| Committee | EMCJ |
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| Conference Date | 2009/5/29(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Electromagnetic Compatibility (EMCJ) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | In-vivo Measurement of Dielectric Properties for Humane-Body Tissue |
| Sub Title (in English) | |
| Keyword(1) | Electromagnetic field exposure |
| Keyword(2) | SAR |
| Keyword(3) | relative complex permittivity |
| Keyword(4) | in-vivo measurement |
| 1st Author's Name | Yusuke SATO |
| 1st Author's Affiliation | Graduate School of Engineering, Nagoya Institute of Technology() |
| 2nd Author's Name | Akimasa HIRATA |
| 2nd Author's Affiliation | Graduate School of Engineering, Nagoya Institute of Technology |
| 3rd Author's Name | Osamu FUJIWARA |
| 3rd Author's Affiliation | Graduate School of Engineering, Nagoya Institute of Technology |
| Date | 2009-06-05 |
| Paper # | EMCJ2009-33 |
| Volume (vol) | vol.109 |
| Number (no) | 76 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |