PubMed · 652002
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B Pastakia. 1978-06-15. Biologic effects of electromagnetic fields.. https://doi.org/10.1056/nejm197806152982416
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Strain D4 of the yeast Saccharomyces cerevisiae, and strains TA-1535, TA-100 and TA-98 of the bacterium Salmonella typhimurium, were exposed to 2.45-GHz continuous wave or 8.5- to 9.6-GHz pulsed electromagnetic radiation (EMR) at various power densities from 1 to 45 mW/cm2. The temperature during radiation was maintained at 30 degrees C for yeast cultures and at 37 degrees C for bacterial cultures. The studies revealed no increase in mutations or of mitotic gene conversions when cells were radiated for two hours or less. Decreased viability of cells was noted in all cultures tested after radiation at power densities of 30 mW/cm2 or more; however, no reliable changes in genetic events occurred.
A 10 kG magnetic field has been used to modify the conventional electron beam isodose distributions. Isodose curves of modified distributions for single and multiple beams measured in a polystyrene phantom are presented. The results suggest a potential use of this technique to achieve dose distributions adjusted to the various tumor contours and corrected for heterogeneity effects.