A circular waveguide irradiation system for nonhuman primates: design and dosimetry.

Abstract:

:A 275-MHz exposure system, consisting of a circular waveguide irradiator and a transparent plastic animal cage, has been developed to accommodate rhesus monkeys weighing up to 15 kg. The vertically oriented waveguide is composed primarily of stainless steel and is fitted with an inner cage fabricated from a tubular section of acrylic plastic. Circularly polarized electromagnetic energy at 275 MHz, either pulsed or continuous wave (CW), can be propagated from the removable top section of the waveguide. The cage is designed to function as the monkey's permanent home. It is fitted with a lever-actuated behavioral performance device on which the monkey responds according to a predetermined schedule to obtain a daily food ration. The system can be adapted to provide for the collection of metabolic and physiologic data as well. Dosimetric measurements were conducted with six rhesus monkeys weighing 3.0-7.2 kg and with a 4-kg model. The dosimetric results show that about one-third of the net incident energy is absorbed by a subject in this system at a normalized specific absorption rate (SAR) of 0.33 (W/kg)/(mW/cm2).

journal_name

Bioelectromagnetics

journal_title

Bioelectromagnetics

authors

Olsen RG,de Lorge JO,Forstall JR,Ezell CS

doi

10.1002/bem.2250050109

subject

Has Abstract

pub_date

1984-01-01 00:00:00

pages

79-88

issue

1

eissn

0197-8462

issn

1521-186X

journal_volume

5

pub_type

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