Comparative dosimetry for children and rodents exposed to extremely low-frequency magnetic fields

We describe a method to correlate E‐fields induced by exposure to extremely low frequency magnetic fields in laboratory mice and rats during in vivo experiments to those induced in children. Four different approaches of mapping relative dose rates between humans and rodents are herein proposed and a...

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Bibliographic Details
Published in:Bioelectromagnetics 2016-07, Vol.37 (5), p.310-322
Main Authors: Gong, Yijian, Capstick, Myles, Dasenbrock, Clemens, Fedrowitz, Maren, Cobaleda, Cesar, Sánchez-García, Isidro, Kuster, Niels
Format: Article
Language:English
Subjects:
Animals
Child
Child, Preschool
childhood leukemia
Computer Simulation
Dosimetry
Electric fields
Female
growth rate mapping
Humans
Infant
Ionizing radiation
Leukemia
Magnetic Fields
Male
Mice
numerical dosimetry
power line exposure
Radiation protection
Radiometry - methods
Rats
rodent exposure
Rodents
Species Specificity
Uncertainty
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Summary:We describe a method to correlate E‐fields induced by exposure to extremely low frequency magnetic fields in laboratory mice and rats during in vivo experiments to those induced in children. Four different approaches of mapping relative dose rates between humans and rodents are herein proposed and analyzed. Based on these mapping methods and volume averaging guidelines published by the International Commission on Non‐Ionizing Radiation Protection (ICNRP) in 2010, maximum and median induced field values for whole body and for tissues of children and rodents were evaluated and compared. Median induced electric fields in children younger than 10 years old are in the range 5.9–8.5 V/m per T (±0.4 dB). Maximum induced electric fields, generally in the skin, are between 48 V/m and 228 V/m per T (±4 dB). To achieve induced electric fields of comparable magnitude in rodents, external magnetic field must be increased by a factor of 4.0 (±2.6 dB) for rats and 7.4 (±1.8 dB) for mice. Meanwhile, to achieve comparable magnetic field dose in rodents, ratio is close to one. These induced field dose rates for children and rodents can be used to quantifiably compare experimental data from in vivo studies with data on exposure of children from epidemiological studies, such as for leukemia. Bioelectromagnetics. 37:310–322, 2016. © 2016 Wiley Periodicals, Inc.
ISSN:0197-8462
1521-186X
DOI:10.1002/bem.21976