| Effects on energy absorption of orientation and size of animals exposed to 2.45-GHz microwave radiation. | |
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MedLine Citation:
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PMID: 3804742 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Rat cadavers oriented perpendicularly to the electric field (parallel to the magnetic field) were exposed to 2.45-GHz microwave radiation. The weight of the cadavers ranged from approximately 5 to 320 g and their lengths ranged from approximately 5 to 22 cm. Average, whole-body specific absorption rates (SAR) were measured using calorimetric techniques, and local specific absorption rates were obtained from time-temperature profiles measured with a non-interacting thermistor probe. The average, whole-body SAR decreased gradually from 0.58 mW g-1 per mW cm-2 at 40 g (10.1 cm in length) to 0.38 mW g-1 per mW cm-2 at 320 g (22 cm in length). The average whole-body SAR decreased from 0.81 to 0.34 mW g-1 per mW cm-2 for cadavers ranging in weight from 5 g (5 cm in length) to 30 g, respectively. The local SAR in the brains decreased from approximately 0.95 mW g-1 per mW cm-2 at 40 g to 0.54 mW g-1 per mW cm-2 at 320 g. Between 5 g and 30 g the SARs in the brain varied from 0.52 to 1.11 mW g-1 per mW cm-2. The local SAR in the colon ranged from 1.05 mW g-1 per mW cm-2 to 0.24 mW g-1 per mW cm-2 for weights between 40 and 320 g. In the 5 to 30 g range, the SAR varied from 0.48 to 1.23 mW g-1 per mW cm-2. A comparison of these results with data previously reported for animals oriented parallel to the E-field showed that the average whole-body SARs were larger for animals weighing greater than 40 g when oriented perpendicularly to the E-field. The local SARs in the colon and brain were slightly higher for the parallel orientation in animals weighing greater than 40 g. The average, whole-body and local SARs were significantly higher for the parallel orientation for animals weighing less than 40 g. |
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Authors:
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D I McRee; H G Davis |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Health physics Volume: 52 ISSN: 0017-9078 ISO Abbreviation: Health Phys Publication Date: 1987 Jan |
Date Detail:
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Created Date: 1987-03-04 Completed Date: 1987-03-04 Revised Date: 2003-11-14 |
Medline Journal Info:
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Nlm Unique ID: 2985093R Medline TA: Health Phys Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 39-43 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Body Weight Calorimetry Microwaves* Radiation Monitoring |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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