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.
C. Eugene Moss et al. · 1977
This 1977 technical report documented electromagnetic radiation measurements from video display terminals (early computer monitors). The study surveyed EMF emissions from these workplace devices during the early computer era. This represents some of the earliest systematic documentation of EMF exposure from computer equipment.
Frank M. Greene · 1977
This 1977 technical report by Frank M. Greene focused on developing methods to measure how much radiofrequency (RF) power biological specimens absorb when exposed to electromagnetic fields. The research addressed fundamental measurement techniques needed to understand how RF energy interacts with living tissue. This work contributed to the scientific foundation for assessing potential health effects from RF exposure.
Unknown authors · 1977
This 1977 government report examined electromagnetic radiation safety around Toronto's CN Tower, focusing on radio frequency and television transmission exposures. The study assessed potential health risks from the tower's broadcasting operations, which was significant given the CN Tower's status as one of the world's tallest communication structures at the time.
Unknown authors · 1977
In 1977, Health and Welfare Canada conducted a safety assessment of electromagnetic radiation exposure levels in and around Toronto's CN Tower, which was then the world's tallest structure. This government report evaluated potential health risks from the tower's broadcast antennas and transmission equipment. The study represents an early official examination of EMF exposure from major broadcasting infrastructure in urban environments.
Maria A. Stuchly · 1977
This 1977 technical report by Maria Stuchly examined microwave radiation exposure standards and maximum permissible levels (MPL) for occupational settings, comparing safety guidelines between countries like Canada and the USSR. The work focused on revisions to Safety Code 6, a Canadian radiation protection standard that governs microwave exposure limits for workers and the public.
Unknown authors · 1977
This 1977 technical report reviewed the existing scientific literature on cancer-causing properties of both ionizing radiation (like X-rays) and non-ionizing radiation (including microwaves and radiofrequency fields). The analysis examined various forms of electromagnetic radiation to understand their potential role in cancer development. This represents one of the earliest comprehensive reviews connecting non-ionizing EMF sources to carcinogenic concerns.
Tell R A · 1976
This 1976 technical report measured radiofrequency field intensities directly around an FM broadcast station antenna. The research documented actual RF exposure levels that people might encounter near broadcast facilities. This type of field measurement data helps establish baseline exposure levels from major RF sources in our environment.
Peter A. Neukomm · 1976
This 1976 conference paper by Neukomm reviewed the health hazards associated with radiofrequency (RF) exposure from telemetry systems, examining how electromagnetic fields interact with biological systems. The research focused on understanding potential health risks from RF telemetry devices, which were becoming increasingly common in medical and industrial applications during the 1970s.
Pacific Measurements Inc. · 1976
This 1976 technical report documented the specifications and calibration procedures for digital power meters designed to measure RF and microwave power levels. The instruments were capable of measuring power in dBm units across various frequencies, providing precise measurement tools for electromagnetic field assessment. Such equipment became essential for accurately quantifying RF exposure levels in research and regulatory contexts.
M. de Vecchis et al. · 1976
This 1976 technical study focused on developing highly sensitive monitoring equipment to detect electromagnetic leakage from microwave sources. The researchers worked on creating radiation monitors capable of measuring both H-field (magnetic field) radiation and general microwave leakage with improved sensitivity compared to existing detection methods.
R. A. Tell · 1976
This 1976 technical report measured radio frequency field intensities directly around FM broadcast station antennas to understand actual exposure levels. The study documented RF field strengths in areas where people might be present near these powerful transmission facilities. This type of measurement work helps establish safety guidelines for workers and the public around broadcast infrastructure.
Wang YC, Hopfer S · 1976
This 1976 technical report developed experimental models for measuring RF radiation hazards, creating tools and methods to assess radiofrequency exposure risks. The research focused on building measurement systems to detect and quantify RF radiation levels that could pose health threats. This work laid important groundwork for understanding how to properly measure electromagnetic field exposures in various environments.
Wang JCH, Linthicum JM · 1976
This 1976 technical report measured radio frequency field intensities at broadcast facilities including television translators, comparing actual exposure levels to FCC standards. The research documented RF power density measurements at various broadcasting sites to assess electromagnetic radiation levels in these environments.
Donald R. Belsher · 1975
This 1975 technical report describes the development of the EDM-2, a specialized meter designed to measure electric energy density in near-field environments. The research focused on creating instrumentation capable of accurately detecting electromagnetic field intensity close to EMF sources. This work contributed to early efforts in quantifying electromagnetic field exposure levels.
Donald R. Belsher · 1975
NIOSH developed the EDM-2, a specialized instrument designed to measure electric energy density in near-field electromagnetic environments. This technical report documented the engineering and calibration of equipment used to quantify EMF exposures in workplace and environmental settings. The meter represents early efforts to create standardized tools for measuring electromagnetic field strength close to EMF sources.
Frank M. Greene · 1975
This 1975 National Bureau of Standards technical report by Frank Greene focused on developing specialized probes for measuring magnetic near-fields around electromagnetic sources. The research addressed fundamental measurement challenges in electromagnetics, creating tools to accurately assess magnetic field exposure levels close to EMF-emitting devices.
H. Allen Ecker · 1975
This 1975 research examined using microwave electromagnetic radiation for medical treatments, specifically focusing on selective heating techniques for cancer therapy and hyperthermia applications. The study explored how electromagnetic fields could be precisely controlled to target specific tissues for therapeutic benefit.
Unknown authors · 1975
This 1975 journal article examined health hazards associated with microwave exposure, contributing to early scientific understanding of electromagnetic radiation's biological effects. The research was conducted during a period when the World Health Organization was beginning to assess potential risks from microwave technology. This represents foundational work in documenting microwave health concerns decades before widespread consumer wireless device adoption.
Smith and Powstenko · 1975
This 1975 technical report examined how to measure power density from broadcasting equipment to ensure compliance with OSHA radiation hazard standards. The study provided measurement protocols for the National Association of Broadcasters to assess RF exposure levels at broadcast facilities. This work established early frameworks for protecting broadcast workers from radiofrequency radiation exposure.
Michaelson, 1975 · 1975
This 1975 technical report by Michaelson examined microwave exposure standards for personnel safety, focusing on power density limits and radiation protection guidelines. The research addressed how to establish safe exposure levels for workers and the public around microwave-emitting equipment. This work helped establish foundational safety standards that influence modern EMF exposure guidelines.
Paul S. Ruggera · 1975
This 1975 government study tracked radiofrequency electromagnetic field strength changes inside a hospital over 16 months. The research documented how RF exposure levels varied in a medical environment where electronic equipment operates continuously. This represents early systematic monitoring of electromagnetic environments in healthcare settings.
Don Mennie · 1975
This 1975 research examined microwave ovens as consumer electronics, focusing on electromagnetic radiation exposure and safety standards. The study investigated leakage radiation from these appliances and evaluated existing safety protocols. This early work helped establish understanding of microwave oven emissions during the technology's initial consumer adoption.
J.J. Weiter, E.D. Finch, W. Schultz, V. Frattali · 1975
This 1975 study examined how microwave radiation affected ascorbic acid (vitamin C) levels in cultured rabbit eye lenses. Researchers measured changes in this essential antioxidant after exposing the lens tissue to microwave energy. The research focused on understanding how electromagnetic radiation might alter critical nutrients in delicate eye tissues.
Murashov · 1975
This 1965 Soviet research examined how ultra-high frequency (UHF) electromagnetic fields affect the pituitary gland's production of ACTH, a key stress hormone. The study represents early scientific investigation into how microwave radiation impacts the body's hormonal control systems. This research is significant because it explored EMF effects on the hypothalamic-pituitary axis, which regulates stress response and metabolism.
Unknown authors · 1974
This 1974 Executive Office report examined how the federal government uses radio frequency spectrum across various agencies and departments. The document analyzed spectrum allocation, management practices, and telecommunications policy during the early era of widespread RF deployment. This represents an early government acknowledgment of the expanding electromagnetic environment that would eventually surround all Americans.