EMF Research Studies

What are the effects of electrical and magnetic fields on man?

Jean Cabanes · 1979

Occupational health and radiation hazards

Sol M. Michaelson · 1979

Researchers at the State University at Buffalo irradiated rats with single doses ranging from .05 to 1.5 roentgen and measured red cell precursor production. Doses of .15 roentgen and above caused a sudden increase in precursor numbers but at a lower rate than in nonirradiated rats. The marrow's ability to produce normal precursor numbers had not recovered at 5, 13, or 30 weeks after exposure.

Evaluation: Shortwave Diathermy Units

Robert Mosenkis · 1979

Diathermy applies high-frequency electromagnetic energy to generate heat in body tissues. Surgical diathermy destroys tissues, while therapeutic diathermy warms them without damage. The effectiveness of therapeutic diathermy has been widely debated, and claims for it are often exaggerated or poorly supported by reliable clinical data.

MEASURED INTERNAL ELECTRIC FIELD IN PHANTOM HUMAN HEADS EXPOSED TO LEAKAGE RADIATION FROM MICROWAVE OVENS

Henry S. Ho, William P. Edwards, Howard Bassen · 1979

Researchers measured internal electric field distributions in phantom human heads exposed to leakage radiation from 2450 MHz and 915 MHz microwave ovens. The phantom heads were made from actual adult and child skulls filled with dielectric materials matching the electrical properties of muscle or brain. For 5 mW/cm² leakage at 2450 MHz, the maximum equivalent dose rate was 9.6 W/kg in the adult phantom and 14.6 W/kg in the child phantom. For 5 mW/cm² leakage at 915 MHz, the maximum equivalent dose rate was 3.0 W/kg in the adult phantom and 5.3 W/kg in the child phantom.

EPIDEMIOLOGIC APPROACH TO THE STUDY OF MICROWAVE EFFECTS

Charlotte Silverman · 1979

MICROWAVE INDUCED HYPERTHERMIA – RADIOTHERAPY IN THE TREATMENT OF SUPERFICIAL HUMAN MALIGNANCIES

Harvey et al. · 1979

Researchers treated ten patients with superficial metastatic tumors using microwave hyperthermia at 2450 MHz. Hyperthermia was delivered at 43°C for 45 minutes using a dielectrically loaded tapered or conformal wave guide applicator. Heat alone produced one complete response, one partial response, and one minor response among the 10 patients. Five lesions that did not respond to heat alone were then treated with hyperthermia plus radiation therapy, resulting in three complete responses and two partial responses.

BIOEFFECTS OF RF/MICROWAVE RADIATION

Bob Curtis · 1979

THRESHOLDS FOR PHYSIOLOGICAL EFFECTS DUE TO RF AND MAGNETIC FIELDS USED IN NMR IMAGING

Thomas F. Budinger · 1979

Radiofrequency (RF) Sealers and Heaters: Potential Health Hazards and Control

Unknown authors · 1979

IRLG Radio Frequency/Microwave Committee: Interim Statement on RF Sealers

William A. Herman, Zorach R. Glaser · 1979

Physical basis and technology of microwave radiometry

A. Mamouni, D.D. N'Guyen, M. Robillard, M. Chivé, Y. Leroy · 1979

The authors describe microwave radiometry systems that detect thermal noise to measure subcutaneous temperature without invasion. Two receivers were built with nearly 1 GHz bandwidth, one at 9 GHz and the other tunable from 2.5 to 3.5 GHz, and could resolve temperature changes of 0.2° or 0.15° within several seconds. Muscle measurements during exercise showed temperature increases higher than those from infrared thermography, confirming that the method reveals subcutaneous temperature.

RADIOTHERMOMETRIE MICROONDE A 9 GHz : Applications aux Cancers du sein et à des localisations tumorales diverses. MONACO - 11-15 Juin 1979 Résultats Préliminaires

A. MAMOUNI, Y. LEROY, M. SANSEL, M. GAUTHERIE · 1979

La thermographie microonde Principe et applications biomédicales

A. MAMOUNI, D.D. N'GUYEN, Y. LEROY, E. CONSTANT · 1979

A Review of Selected Biological Effects and Dosimetric Data Useful for Development of Radiofrequency Safety Standards for Human Exposure

R.A. Tell, F. Harlen · 1979

The authors reviewed selected biological effects and dosimetric data to develop radiofrequency safety standards based on thermogenic properties of electromagnetic fields. The 10 mW/cm² limit appears adequate for frequencies above 1 GHz but may be too high for lower frequencies due to body resonances causing increased energy deposition and local temperature rises. They noted that energy absorption in small laboratory animals can be up to 30 times greater than in humans at the same field strength. The current averaging period of 0.1 hours is considered unjustifiably short.

DOSE ASSESSMENT TO OPERATORS OF INDUSTRIAL RADIOFREQUENCY SEALERS

Stan Neuder · 1979

Relationship of Exposure to Radiofrequency Energy and Selected Reproductive and Health Factors

Helen C. Chase · 1979

SAFETY AND POTENTIAL HAZARDS IN THE CURRENT APPLICATIONS OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY

PADMAKAR P. LELE · 1979

INDUSTRIAL HYGIENE WALK-THROUGH SURVEY REPORT ON RF RADIATION EXPOSURES FROM HEAT SEALERS

Clinton Cox, Betsy Egan, Bill Murray, Bob Herrick · 1979

On November 29, 1978, NIOSH conducted a walk-through survey of the RF sealing area at Standard Plastic Products in South Plainfield, New Jersey. The purpose was to identify workers for a study on health effects from occupational radio frequency radiation exposure. Electric and magnetic fields from the heat sealers were measured and corrected for duty cycle. All three sealers produced electric fields greater than 1000 V/M, exceeding the ANSI guideline of 200 V/M by at least five times. A cohort of 15 workers, mostly elderly women, was identified and could be used in a study if combined with similar cohorts from other plants.

PROPOSED TLV FOR RADIOFREQUENCY RADIATION

Unknown authors · 1979

Relation between suicide and the electromagnetic field of overhead power lines

Unknown authors · 1979

Laboratory studies have shown that electromagnetic fields similar to those from high-voltage transmission lines can produce biological effects. Correlation has been established between the presence of transmission-line fields and the occurrence of suicides in part of the Midlands of England.

Electrical wiring configurations and childhood cancer

Unknown authors · 1979

An excess of electrical wiring configurations suggestive of high current flow was noted near the homes of children who developed cancer compared to control children in Colorado during 1976-1977. The association was strongest for children who had lived their entire lives at the same address and appeared to be dose-related. The correlation did not appear to be explained by neighborhood, street congestion, social class, or family structure.

The biological effects of magnetic fields on man

E.E. KETCHEN, W.E. PORTER, N.E. BOLTON · 1978

Human exposures up to 20,000 G produced only transient sensations such as a metallic taste or tooth pain in individuals with dental fillings, while Soviet magnet-fabrication workers reported cardiovascular and neurological symptoms at unspecified field strengths. In rabbits, stationary fields of 200–1000 G for 1–3 minutes altered EEG patterns, with a threshold around 100 G, and long-term exposure caused neuroglial and neuronal lesions. Mice exposed to 4200–9000 G showed a significant decrease in bone-marrow megakaryocytes and a statistically significant increase in splenic megakaryocytes.

NON-OPERATIVE TREATMENT OF PSEUDARTHROSES AND NON-UNIONS BY PULSING ELECTROMAGNETIC FIELDS

C.A.L. Bassett et al. · 1978

Postmastectomy patient with sensitivity to microwave oven in operative area

Michaelson SM · 1978

Tests for Human Perception of 60 Hz Moderate Strength Magnetic Fields

Robert D. Tucker, Otto H. Schmitt · 1978

Each trial asked the subject to decide whether a 60 Hz magnetic field of 7.5–15 gauss was present, with the field randomized by computer. After more than 30,000 total trials, no individual performed better than chance, and group results were consistent with no real perception.