Acute dosimetry and estimation of threshold-inducing behavioral signs of thermal stress in rabbits at 2.45-GHz microwave exposure.
Identifieur interne : 001803 ( Main/Curation ); précédent : 001802; suivant : 001804Acute dosimetry and estimation of threshold-inducing behavioral signs of thermal stress in rabbits at 2.45-GHz microwave exposure.
Auteurs : Akimasa Hirata [Japon] ; Masami Kojima ; Hiroki Kawai ; Yoko Yamashiro ; Soichi Watanabe ; Hiroshi Sasaki ; Osamu FujiwaraSource :
- IEEE transactions on bio-medical engineering [ 1558-2531 ] ; 2010.
Descripteurs français
- KwdFr :
- Animaux, Charge corporelle, Comportement animal (effets des radiations), Dose de radiation, Dosimétrie du corps entier (), Irradiation corporelle totale (), Lapins, Micro-ondes, Modèles biologiques, Mâle, Relation dose-effet des radiations, Réaction de choc thermique (effets des radiations), Réaction de choc thermique (physiologie), Seuil différentiel (effets des radiations), Simulation numérique, Température du corps (effets des radiations).
- MESH :
- effets des radiations : Comportement animal, Réaction de choc thermique, Seuil différentiel, Température du corps.
- physiologie : Réaction de choc thermique.
- Animaux, Charge corporelle, Dose de radiation, Dosimétrie du corps entier, Irradiation corporelle totale, Lapins, Micro-ondes, Modèles biologiques, Mâle, Relation dose-effet des radiations, Simulation numérique.
English descriptors
- KwdEn :
- Animals, Behavior, Animal (radiation effects), Body Burden, Body Temperature (radiation effects), Computer Simulation, Differential Threshold (radiation effects), Dose-Response Relationship, Radiation, Heat-Shock Response (physiology), Heat-Shock Response (radiation effects), Male, Microwaves, Models, Biological, Rabbits, Radiation Dosage, Whole-Body Counting (methods), Whole-Body Irradiation (methods).
- MESH :
- methods : Whole-Body Counting, Whole-Body Irradiation.
- physiology : Heat-Shock Response.
- radiation effects : Behavior, Animal, Body Temperature, Differential Threshold, Heat-Shock Response.
- Animals, Body Burden, Computer Simulation, Dose-Response Relationship, Radiation, Male, Microwaves, Models, Biological, Rabbits, Radiation Dosage.
Abstract
In the current international guidelines and standards for human exposure to microwaves (MWs), the basic restriction is determined by the whole-body average specific absorption rate (SAR). The basis for the guidelines is the adverse effect such as work stoppage in animals for whole-body average SARs above a certain level. Although it is known that absorbed MW energy causes the behavioral sign of thermal stress, the relationship of whole-body average SAR with temperature/temperature elevation has not been sufficiently investigated. In the present study, we performed experiments on rabbits exposed to 2.45-GHz MWs. A total of 24 measurements were conducted for power densities from approximately 100 to 1000 W/m(2). Our computational code for electromagnetic-thermal dosimetry was used to set the exposure time duration and incident power density. Our experimental results suggest that a core temperature elevation of 1 degrees C is an estimate of the threshold-inducing complex behavioral signs of MW-induced thermal stress in rabbits for different whole-body average SARs and exposure time durations. The whole-body average SAR required for MW-induced behavioral sign in rabbits was estimated as approximately 1.3 W/kg for 2.45-GHz MWs.
DOI: 10.1109/TBME.2009.2038896
PubMed: 20172806
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Yoko" uniqKey="Yamashiro Y" first="Yoko" last="Yamashiro">Yoko Yamashiro</name></author><author><name sortKey="Watanabe, Soichi" sort="Watanabe, Soichi" uniqKey="Watanabe S" first="Soichi" last="Watanabe">Soichi Watanabe</name></author><author><name sortKey="Sasaki, Hiroshi" sort="Sasaki, Hiroshi" uniqKey="Sasaki H" first="Hiroshi" last="Sasaki">Hiroshi Sasaki</name></author><author><name sortKey="Fujiwara, Osamu" sort="Fujiwara, Osamu" uniqKey="Fujiwara O" first="Osamu" last="Fujiwara">Osamu Fujiwara</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2010">2010</date><idno type="RBID">pubmed:20172806</idno><idno type="pmid">20172806</idno><idno type="doi">10.1109/TBME.2009.2038896</idno><idno type="wicri:Area/PubMed/Corpus">000710</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">000710</idno><idno type="wicri:Area/PubMed/Curation">000707</idno><idno type="wicri:explorRef" 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Institute of Technology, Nagoya 466-8555</wicri:regionArea><wicri:noRegion>Nagoya 466-8555</wicri:noRegion></affiliation></author><author><name sortKey="Kojima, Masami" sort="Kojima, Masami" uniqKey="Kojima M" first="Masami" last="Kojima">Masami Kojima</name></author><author><name sortKey="Kawai, Hiroki" sort="Kawai, Hiroki" uniqKey="Kawai H" first="Hiroki" last="Kawai">Hiroki Kawai</name></author><author><name sortKey="Yamashiro, Yoko" sort="Yamashiro, Yoko" uniqKey="Yamashiro Y" first="Yoko" last="Yamashiro">Yoko Yamashiro</name></author><author><name sortKey="Watanabe, Soichi" sort="Watanabe, Soichi" uniqKey="Watanabe S" first="Soichi" last="Watanabe">Soichi Watanabe</name></author><author><name sortKey="Sasaki, Hiroshi" sort="Sasaki, Hiroshi" uniqKey="Sasaki H" first="Hiroshi" last="Sasaki">Hiroshi Sasaki</name></author><author><name sortKey="Fujiwara, Osamu" sort="Fujiwara, Osamu" uniqKey="Fujiwara O" first="Osamu" last="Fujiwara">Osamu Fujiwara</name></author></analytic><series><title level="j">IEEE transactions on bio-medical engineering</title><idno type="eISSN">1558-2531</idno><imprint><date when="2010" type="published">2010</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Animals</term><term>Behavior, Animal (radiation effects)</term><term>Body Burden</term><term>Body Temperature (radiation effects)</term><term>Computer Simulation</term><term>Differential Threshold (radiation effects)</term><term>Dose-Response Relationship, Radiation</term><term>Heat-Shock Response (physiology)</term><term>Heat-Shock Response (radiation effects)</term><term>Male</term><term>Microwaves</term><term>Models, Biological</term><term>Rabbits</term><term>Radiation Dosage</term><term>Whole-Body Counting (methods)</term><term>Whole-Body Irradiation (methods)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Animaux</term><term>Charge corporelle</term><term>Comportement animal (effets des radiations)</term><term>Dose de radiation</term><term>Dosimétrie du corps entier ()</term><term>Irradiation corporelle totale ()</term><term>Lapins</term><term>Micro-ondes</term><term>Modèles biologiques</term><term>Mâle</term><term>Relation dose-effet des radiations</term><term>Réaction de choc thermique (effets des radiations)</term><term>Réaction de choc thermique (physiologie)</term><term>Seuil différentiel (effets des radiations)</term><term>Simulation numérique</term><term>Température du corps (effets des radiations)</term></keywords><keywords scheme="MESH" qualifier="effets des radiations" xml:lang="fr"><term>Comportement animal</term><term>Réaction de choc thermique</term><term>Seuil différentiel</term><term>Température du corps</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Whole-Body Counting</term><term>Whole-Body Irradiation</term></keywords><keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Réaction de choc thermique</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Heat-Shock Response</term></keywords><keywords scheme="MESH" qualifier="radiation effects" xml:lang="en"><term>Behavior, Animal</term><term>Body Temperature</term><term>Differential Threshold</term><term>Heat-Shock Response</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Animals</term><term>Body Burden</term><term>Computer Simulation</term><term>Dose-Response Relationship, Radiation</term><term>Male</term><term>Microwaves</term><term>Models, Biological</term><term>Rabbits</term><term>Radiation Dosage</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Animaux</term><term>Charge corporelle</term><term>Dose de radiation</term><term>Dosimétrie du corps entier</term><term>Irradiation corporelle totale</term><term>Lapins</term><term>Micro-ondes</term><term>Modèles biologiques</term><term>Mâle</term><term>Relation dose-effet des radiations</term><term>Simulation numérique</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">In the current international guidelines and standards for human exposure to microwaves (MWs), the basic restriction is determined by the whole-body average specific absorption rate (SAR). The basis for the guidelines is the adverse effect such as work stoppage in animals for whole-body average SARs above a certain level. Although it is known that absorbed MW energy causes the behavioral sign of thermal stress, the relationship of whole-body average SAR with temperature/temperature elevation has not been sufficiently investigated. In the present study, we performed experiments on rabbits exposed to 2.45-GHz MWs. A total of 24 measurements were conducted for power densities from approximately 100 to 1000 W/m(2). Our computational code for electromagnetic-thermal dosimetry was used to set the exposure time duration and incident power density. Our experimental results suggest that a core temperature elevation of 1 degrees C is an estimate of the threshold-inducing complex behavioral signs of MW-induced thermal stress in rabbits for different whole-body average SARs and exposure time durations. The whole-body average SAR required for MW-induced behavioral sign in rabbits was estimated as approximately 1.3 W/kg for 2.45-GHz MWs.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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