The specific absorption rate in different brain regions of rats exposed to electromagnetic plane waves
Accurate dosimetry of a specific brain region in rats exposed to an electromagnetic field (EMF) is essential for studies focusing on dose-effect relationship of the region. However, only dosimetry of whole brain or whole body were evaluated in most of previous studies. In this study, a numerical vox...
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| Veröffentlicht in: | Scientific reports 2019-09, Vol.9 (1), p.13277-13, Article 13277 |
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| description | Accurate dosimetry of a specific brain region in rats exposed to an electromagnetic field (EMF) is essential for studies focusing on dose-effect relationship of the region. However, only dosimetry of whole brain or whole body were evaluated in most of previous studies. In this study, a numerical voxel rat model with 10 segmented brain regions was constructed. Then, the effects of frequency, incidence direction, and E-polarization direction of plane wave EMF on brain region averaged specific absorption rate (BRSAR) of rats were investigated. At last, the reliability of using whole-body averaged SAR (WBDSAR) and whole-brain averaged SAR (WBRSAR) as estimations of BRSAR were also evaluated. Our results demonstrated that the BRSAR depended on the frequency, incidence direction, and E-polarization direction of the EMF. Besides, the largest deviation could be up to 13.1 dB between BRSAR and WBDSAR and 9.59 dB between BRSAR and WBRSAR. The results suggested that to establish an accurate dose-effect relationship, the variance of the BRSAR induced by alteration of frequency, incidence direction, and E-polarization direction of EMF should be avoided or carefully evaluated. Furthermore, the use of WBDSAR and WBRSAR as estimations of BRSAR should be restricted to certain conditions such that the deviations are not too large. |
| doi_str_mv | 10.1038/s41598-019-49719-4 |
| format | Article |
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However, only dosimetry of whole brain or whole body were evaluated in most of previous studies. In this study, a numerical voxel rat model with 10 segmented brain regions was constructed. Then, the effects of frequency, incidence direction, and E-polarization direction of plane wave EMF on brain region averaged specific absorption rate (BRSAR) of rats were investigated. At last, the reliability of using whole-body averaged SAR (WBDSAR) and whole-brain averaged SAR (WBRSAR) as estimations of BRSAR were also evaluated. Our results demonstrated that the BRSAR depended on the frequency, incidence direction, and E-polarization direction of the EMF. Besides, the largest deviation could be up to 13.1 dB between BRSAR and WBDSAR and 9.59 dB between BRSAR and WBRSAR. The results suggested that to establish an accurate dose-effect relationship, the variance of the BRSAR induced by alteration of frequency, incidence direction, and E-polarization direction of EMF should be avoided or carefully evaluated. Furthermore, the use of WBDSAR and WBRSAR as estimations of BRSAR should be restricted to certain conditions such that the deviations are not too large.</description><identifier>ISSN: 2045-2322</identifier><identifier>EISSN: 2045-2322</identifier><identifier>DOI: 10.1038/s41598-019-49719-4</identifier><identifier>PMID: 31527693</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>59 ; 59/57 ; 631/57 ; 639/766/747 ; Absorption ; Animals ; Brain ; Brain - radiation effects ; Computational Biology ; Computer Simulation ; Dose-response effects ; Dosimetry ; Electromagnetic fields ; Electromagnetic Fields - adverse effects ; Humanities and Social Sciences ; Low frequency ; multidisciplinary ; Polarization ; Radiometry - methods ; Rats ; Science ; Science (multidisciplinary) ; Wireless Technology</subject><ispartof>Scientific reports, 2019-09, Vol.9 (1), p.13277-13, Article 13277</ispartof><rights>The Author(s) 2019</rights><rights>2019. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c474t-158ca136ea36689969014f76bff2418769882504ec7391f532038b72f1d32f83</citedby><cites>FETCH-LOGICAL-c474t-158ca136ea36689969014f76bff2418769882504ec7391f532038b72f1d32f83</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC6746715/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC6746715/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,723,776,780,860,881,27901,27902,41096,42165,51551,53766,53768</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/31527693$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Wang, Hao-Yu</creatorcontrib><creatorcontrib>Li, Chun-Fang</creatorcontrib><creatorcontrib>Yu, Chao</creatorcontrib><creatorcontrib>Dong, Ji</creatorcontrib><creatorcontrib>Zou, Yong</creatorcontrib><creatorcontrib>Nie, Bin-Bin</creatorcontrib><creatorcontrib>Li, Jia-Kai</creatorcontrib><creatorcontrib>Ma, Lin</creatorcontrib><creatorcontrib>Peng, Rui-Yun</creatorcontrib><title>The specific absorption rate in different brain regions of rats exposed to electromagnetic plane waves</title><title>Scientific reports</title><addtitle>Sci Rep</addtitle><addtitle>Sci Rep</addtitle><description>Accurate dosimetry of a specific brain region in rats exposed to an electromagnetic field (EMF) is essential for studies focusing on dose-effect relationship of the region. However, only dosimetry of whole brain or whole body were evaluated in most of previous studies. In this study, a numerical voxel rat model with 10 segmented brain regions was constructed. Then, the effects of frequency, incidence direction, and E-polarization direction of plane wave EMF on brain region averaged specific absorption rate (BRSAR) of rats were investigated. At last, the reliability of using whole-body averaged SAR (WBDSAR) and whole-brain averaged SAR (WBRSAR) as estimations of BRSAR were also evaluated. Our results demonstrated that the BRSAR depended on the frequency, incidence direction, and E-polarization direction of the EMF. Besides, the largest deviation could be up to 13.1 dB between BRSAR and WBDSAR and 9.59 dB between BRSAR and WBRSAR. The results suggested that to establish an accurate dose-effect relationship, the variance of the BRSAR induced by alteration of frequency, incidence direction, and E-polarization direction of EMF should be avoided or carefully evaluated. Furthermore, the use of WBDSAR and WBRSAR as estimations of BRSAR should be restricted to certain conditions such that the deviations are not too large.</description><subject>59</subject><subject>59/57</subject><subject>631/57</subject><subject>639/766/747</subject><subject>Absorption</subject><subject>Animals</subject><subject>Brain</subject><subject>Brain - radiation effects</subject><subject>Computational Biology</subject><subject>Computer Simulation</subject><subject>Dose-response effects</subject><subject>Dosimetry</subject><subject>Electromagnetic fields</subject><subject>Electromagnetic Fields - adverse effects</subject><subject>Humanities and Social Sciences</subject><subject>Low frequency</subject><subject>multidisciplinary</subject><subject>Polarization</subject><subject>Radiometry - methods</subject><subject>Rats</subject><subject>Science</subject><subject>Science (multidisciplinary)</subject><subject>Wireless Technology</subject><issn>2045-2322</issn><issn>2045-2322</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><sourceid>C6C</sourceid><sourceid>EIF</sourceid><sourceid>BENPR</sourceid><recordid>eNp9kUFPHSEQx0nTphrrF-ihIemll1UGWBYuTRrTahOTXt6dsLzhidm3bGGf1W8v61NrPZTDAJnf_JnhT8hHYCfAhD4tElqjGwamkaZb4htyyJlsGy44f_vifECOS7lmdbXcSDDvyYGAlnfKiEMSVldIy4Q-huip60vK0xzTSLObkcaRrmMImHGcaZ9dvWfc1HShKSxIoXg7pYJrOieKA_o5p63bjDhXtWlwI9I_7gbLB_IuuKHg8eN-RFY_vq_OLprLX-c_z75dNl52cm6g1d6BUOiEUtoYZRjI0Kk-BC5B15a15i2T6DthILSC16_oOx5gLXjQ4oh83ctOu36La1_bzm6wU45bl-9sctH-mxnjld2kG6s6qTpoq8CXR4Gcfu-wzHYbi8dhmSTtiuXccGN0jRX9_Aq9Trs81ukWCgRXwKBSfE_5nErJGJ6bAWYXI-3eSFuNtA9GWlmLPr0c47nkybYKiD1QamrcYP779n9k7wGZnKk0</recordid><startdate>20190916</startdate><enddate>20190916</enddate><creator>Wang, Hao-Yu</creator><creator>Li, Chun-Fang</creator><creator>Yu, Chao</creator><creator>Dong, Ji</creator><creator>Zou, Yong</creator><creator>Nie, Bin-Bin</creator><creator>Li, Jia-Kai</creator><creator>Ma, Lin</creator><creator>Peng, Rui-Yun</creator><general>Nature Publishing Group UK</general><general>Nature Publishing Group</general><scope>C6C</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7X7</scope><scope>7XB</scope><scope>88A</scope><scope>88E</scope><scope>88I</scope><scope>8FE</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>LK8</scope><scope>M0S</scope><scope>M1P</scope><scope>M2P</scope><scope>M7P</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>Q9U</scope><scope>7X8</scope><scope>5PM</scope></search><sort><creationdate>20190916</creationdate><title>The specific absorption rate in different brain regions of rats exposed to electromagnetic plane waves</title><author>Wang, Hao-Yu ; Li, Chun-Fang ; Yu, Chao ; Dong, Ji ; Zou, Yong ; Nie, Bin-Bin ; Li, Jia-Kai ; Ma, Lin ; Peng, Rui-Yun</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c474t-158ca136ea36689969014f76bff2418769882504ec7391f532038b72f1d32f83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>59</topic><topic>59/57</topic><topic>631/57</topic><topic>639/766/747</topic><topic>Absorption</topic><topic>Animals</topic><topic>Brain</topic><topic>Brain - radiation effects</topic><topic>Computational Biology</topic><topic>Computer Simulation</topic><topic>Dose-response effects</topic><topic>Dosimetry</topic><topic>Electromagnetic fields</topic><topic>Electromagnetic Fields - adverse effects</topic><topic>Humanities and Social Sciences</topic><topic>Low frequency</topic><topic>multidisciplinary</topic><topic>Polarization</topic><topic>Radiometry - methods</topic><topic>Rats</topic><topic>Science</topic><topic>Science (multidisciplinary)</topic><topic>Wireless Technology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, Hao-Yu</creatorcontrib><creatorcontrib>Li, Chun-Fang</creatorcontrib><creatorcontrib>Yu, Chao</creatorcontrib><creatorcontrib>Dong, Ji</creatorcontrib><creatorcontrib>Zou, Yong</creatorcontrib><creatorcontrib>Nie, Bin-Bin</creatorcontrib><creatorcontrib>Li, Jia-Kai</creatorcontrib><creatorcontrib>Ma, Lin</creatorcontrib><creatorcontrib>Peng, Rui-Yun</creatorcontrib><collection>Springer Nature OA Free Journals</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Biology Database (Alumni Edition)</collection><collection>Medical Database (Alumni Edition)</collection><collection>Science Database (Alumni Edition)</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Natural Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>ProQuest Biological Science Collection</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Science Database</collection><collection>Biological Science Database</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central Basic</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Scientific reports</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wang, Hao-Yu</au><au>Li, Chun-Fang</au><au>Yu, Chao</au><au>Dong, Ji</au><au>Zou, Yong</au><au>Nie, Bin-Bin</au><au>Li, Jia-Kai</au><au>Ma, Lin</au><au>Peng, Rui-Yun</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The specific absorption rate in different brain regions of rats exposed to electromagnetic plane waves</atitle><jtitle>Scientific reports</jtitle><stitle>Sci Rep</stitle><addtitle>Sci Rep</addtitle><date>2019-09-16</date><risdate>2019</risdate><volume>9</volume><issue>1</issue><spage>13277</spage><epage>13</epage><pages>13277-13</pages><artnum>13277</artnum><issn>2045-2322</issn><eissn>2045-2322</eissn><abstract>Accurate dosimetry of a specific brain region in rats exposed to an electromagnetic field (EMF) is essential for studies focusing on dose-effect relationship of the region. However, only dosimetry of whole brain or whole body were evaluated in most of previous studies. In this study, a numerical voxel rat model with 10 segmented brain regions was constructed. Then, the effects of frequency, incidence direction, and E-polarization direction of plane wave EMF on brain region averaged specific absorption rate (BRSAR) of rats were investigated. At last, the reliability of using whole-body averaged SAR (WBDSAR) and whole-brain averaged SAR (WBRSAR) as estimations of BRSAR were also evaluated. Our results demonstrated that the BRSAR depended on the frequency, incidence direction, and E-polarization direction of the EMF. Besides, the largest deviation could be up to 13.1 dB between BRSAR and WBDSAR and 9.59 dB between BRSAR and WBRSAR. The results suggested that to establish an accurate dose-effect relationship, the variance of the BRSAR induced by alteration of frequency, incidence direction, and E-polarization direction of EMF should be avoided or carefully evaluated. Furthermore, the use of WBDSAR and WBRSAR as estimations of BRSAR should be restricted to certain conditions such that the deviations are not too large.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>31527693</pmid><doi>10.1038/s41598-019-49719-4</doi><tpages>13</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | 59 59/57 631/57 639/766/747 Absorption Animals Brain Brain - radiation effects Computational Biology Computer Simulation Dose-response effects Dosimetry Electromagnetic fields Electromagnetic Fields - adverse effects Humanities and Social Sciences Low frequency multidisciplinary Polarization Radiometry - methods Rats Science Science (multidisciplinary) Wireless Technology |
| title | The specific absorption rate in different brain regions of rats exposed to electromagnetic plane waves |
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