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FDTD analysis of human body-core temperature elevation due to RF far-field energy prescribed in the ICNIRP guidelines
https://nitech.repo.nii.ac.jp/records/5352
https://nitech.repo.nii.ac.jp/records/535204782f7c-d418-480c-955d-c739f24a4580
| 名前 / ファイル | ライセンス | アクション |
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本文_fulltext (291.7 kB)
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c 2007 IOP Publishing Ltd.This is an author-created, un-copyedited version of an article accepted for publication in Physics in medicine and biology. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or anversion derived from it. The definitive publisher-authenticated version is available online at 10.1088/0031-9155/52/16/020.
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||||||||
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| 公開日 | 2013-06-25 | |||||||||||
| タイトル | ||||||||||||
| タイトル | FDTD analysis of human body-core temperature elevation due to RF far-field energy prescribed in the ICNIRP guidelines | |||||||||||
| 言語 | en | |||||||||||
| 言語 | ||||||||||||
| 言語 | eng | |||||||||||
| 資源タイプ | ||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||
| 資源タイプ | journal article | |||||||||||
| 著者 |
Hirata, Akimasa
× Hirata, Akimasa
× Asano, Takayuki
× Fujiwara, Osamu
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| 著者別名 | ||||||||||||
| 姓名 | 平田, 晃正 | |||||||||||
| 著者別名 | ||||||||||||
| 姓名 | 藤原, 修 | |||||||||||
| bibliographic_information |
en : Physics in medicine and biology 巻 52, 号 16, p. 5013-5023, 発行日 2007-08-21 |
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| 出版者 | ||||||||||||
| 出版者 | Institute of Physics Publishing | |||||||||||
| 言語 | en | |||||||||||
| ISSN | ||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||
| 収録物識別子 | 0031-9155 | |||||||||||
| item_10001_source_id_32 | ||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||
| 収録物識別子 | AA00774048 | |||||||||||
| 出版タイプ | ||||||||||||
| 出版タイプ | AM | |||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||||||||
| item_10001_relation_34 | ||||||||||||
| 関連タイプ | isVersionOf | |||||||||||
| 識別子タイプ | DOI | |||||||||||
| 関連識別子 | http://dx.doi.org/10.1088/0031-9155/52/16/020 | |||||||||||
| 関連名称 | 10.1088/0031-9155/52/16/020 | |||||||||||
| 内容記述 | ||||||||||||
| 内容記述タイプ | Other | |||||||||||
| 内容記述 | This study investigated the relationship between the specific absorption rate and temperature elevation in an anatomically-based model named NORMAN for exposure to radio-frequency far fields in the ICNIRP guidelines (1998 Health Phys. 74 494?522). The finite-difference time-domain method is used for analyzing the electromagnetic absorption and temperature elevation in NORMAN. In order to consider the variability of human thermoregulation, parameters for sweating are derived and incorporated into a conventional sweating formula. First, we investigated the effect of blood temperature variation modeling on body-core temperature. The computational results show that the modeling of blood temperature variation was the dominant factor influencing the body-core temperature. This is because the temperature in the inner tissues is elevated via the circulation of blood whose temperature was elevated due to EM absorption. Even at different frequencies, the body-core temperature elevation at an identical whole-body average specific absorption rate (SAR) was almost the same, suggesting the effectiveness of the whole-body average SAR as a measure in the ICNIRP guidelines. Next, we discussed the effect of sweating on the temperature elevation and thermal time constant of blood. The variability of temperature elevation caused by the sweating rate was found to be 30%. The blood temperature elevation at the basic restriction in the ICNIRP guidelines of 0.4 W kg?1 is 0.25 °C even for a low sweating rate. The thermal time constant of blood temperature elevation was 23 min and 52 min for a man with a lower and a higher sweating rate, respectively, which is longer than the average time of the SAR in the ICNIRP guidelines. Thus, the whole-body average SAR required for blood temperature elevation of 1 °C was 4.5 W kg?1 in the model of a human with the lower sweating coefficients for 60 min exposure. From a comparison of this value with the basic restriction in the ICNIRP guidelines of 0.4 W kg?1, the safety factor was 11. | |||||||||||
| 言語 | en | |||||||||||
