Microwaves and Human Leukocyte Function.
Final technical rept. Jan 80-Feb 81,
ROCHESTER UNIV N Y SCHOOL OF MEDICINE AND DENTISTRY
Pagination or Media Count:
The objective of these studies is to determine whether exposure to microwaves 2450 MHz affects the function of human leukocytes in the resting state and during antigenic or mitogenic challenge. This paper is a summary report of the construction and calibration of a waveguide exposure system for the exposure of human mononuclear leukocytes to 2450 MHz CM microwave energy. A description of the dual vial waveguide exposure facility for in vitro irradication of human leukocytes is presented. Calorimetric determinations of specific absorption rates SAR were made using heating curves measured with a microwave transparent Vitek 101 Electrothermia Monitor. The correlation between SAR and forward power was highly significant r 0.95. At a forward power of 0.55 W the averaged SAR was approximately 33 mWm1. However, inhomogeneity and significant resonance absorption were noted in the dual vial waveguide exposure facility. A 30-point measurement of SAR distribution revealed that the SAR at any of the measured points could range between 0.12- and 3.94-fold of the average SAR within the given vial. Measurements indicated that this variability in SAR values did not create significant thermal gradients within the vials when external agitation was applied. Author