THE PHYSIOLOGICAL EFFECTS OF CURRENTS OF VERY HIGH FREQUENCY (135,000,000 TO 3,300,000 CYCLES PER SECOND)
J. W. Schereschewsky · 1926
Research on EMF from medical imaging and therapeutic devices - MRI machines and other medical equipment.
## Medical EMF Sources: Understanding Exposure in Healthcare Settings When you enter a medical facility for diagnostic imaging or treatment, you're stepping into one of the most electromagnetically intense environments you'll likely encounter. MRI machines, CT scanners, X-ray equipment, and therapeutic devices generate some of the strongest electromagnetic fields found in everyday settings-often thousands of times more powerful than typical household electronics.
J. W. Schereschewsky · 1926
Unknown authors
Michael H. Repacholi
Stephen F. Cleary, William T. Ham, Jr.
Unknown authors
Stephen F. Cleary, William T. Ham, Jr.
This technical report by SF Cleary examined the biological effects of microwave radiation exposure, focusing on considerations for proper evaluation methods. The research addressed how to assess health impacts from microwave sources including radar systems. This type of foundational work helped establish frameworks for understanding microwave radiation's effects on living systems.
Unknown authors
Howard E. Clark
Vernon E. Rose et al.
Early standards treated 10 mw/cm2 as a maximum permissible level that should not be exceeded and considered only power density. Later standards introduced time-weighted exposure concepts allowing levels above 10 mw/cm2 for limited durations. The 1966 USASI standard set a protection guide at 10 mw/cm2 averaged over 0.1 hour and used an energy density of 1 mwh/cm2 for shorter periods.
James D. Fahnestock, Ralph W. Logan
Unknown authors
Unknown authors
Unknown authors
Clinton Cox, William E. Murray, Jr., Edward P. Foley, Jr.
Pacific Measurements Inc
Richard A. Tell et al.
Unknown authors
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Researchers investigated electromagnetic emissions from the human body across the frequency region 10^3 Hz - 2-10^9 Hz using tunable radiometers. They found that the body acts as a purely thermal radiator down to about 10^4 Hz, with radiation temperature equal to body temperature at all tested positions above that frequency. Below 10^4 Hz, emissions exceeded thermal levels and varied with electrode type, location, and muscle state, peaking with coaxial needle electrodes in contracted muscle.
John Roman
Animal experiments have largely been performed using small fur-bearing animals such as mice, rabbits and dogs, but results are difficult to extrapolate to humans. The eye and the testis are the two body organs most seriously affected by heat. Due to overheating, the eye may develop opacities or cataracts, and these are irreversible, while damage to the testis induces temporary sterility.
Unknown authors
Narda Microwave Corporation
JOHN E. BOYSEN
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