DIATHERMY SURVEY
Authors not listed · 1972
Early government investigation of medical microwave devices highlighted radiation safety concerns that remain relevant today.
Plain English Summary
The Massachusetts Department of Public Health conducted a survey in 1972 examining diathermy devices, which use microwave radiation for medical heating treatments. This early government investigation focused on radiation control and safety protocols for medical microwave equipment. The study represents one of the first official efforts to assess microwave radiation exposure risks in healthcare settings.
Why This Matters
This 1972 Massachusetts survey marks a pivotal moment when government health agencies first began systematically examining microwave radiation safety in medical settings. Diathermy devices, which deliver focused microwave energy to heat body tissues for therapeutic purposes, were among the most powerful sources of microwave radiation that people encountered in that era. What makes this investigation particularly significant is its timing - it occurred during the early recognition that microwave radiation might pose health risks beyond just thermal heating effects.
The reality is that diathermy devices operate at power levels far exceeding what we experience from modern wireless devices, yet this early government scrutiny of microwave safety laid important groundwork. Today's cell phones, WiFi routers, and other wireless technologies operate at much lower power levels but expose us continuously rather than for brief medical treatments. The questions raised by this 1972 survey about microwave radiation safety remain relevant as we navigate our increasingly wireless world.
Finding
The Bureau then visited and questioned a selected group of users on the type of facility, the type of equipment used, the number of patients treated each month and the parts of the body most commonly treated. One of the more interesting questions concerned the training of the operators of the equipment. None of the users, with the exception of the registered physical therapists, aides and practical nurses, had received any formal training.
In their words
“The Bureau then visited and questioned a selected group of users on the type of facility, the type of equipment used, the number of patients treated each month and the parts of the body most commonly treated. One of the more interesting questions concerned the training of the operators of the equipment. None of the users, with the exception of the registered physical therapists, aides and practical nurses, had received any formal training.”
Source
(1972) (1972)Exposure Information
Specific exposure levels were not quantified in this study.
Study Details
The Bureau of Radiation Control, Division of Medical Care, completed a pilot survey of diathermy equ...
Out of a total of 10,558 questionnaires mailed, the Bureau received 6,808 replies. From the Division...
A complete study to determine whether this level is causing any biologic damage appears to be a logical follow-up to the initial survey. The report speaks of 'a limit of 10 milliwatts per square centimeter (mW/cm²) for electronic products that use microwaves' in a context of therapeutic heat modalities that bears no relation to therapeutic heat. The fact that 1000 mW/cm² power-flux density measurements were recorded in Department surveys is meaningless in many respects. No distance, wave-form, or time data were given. In addition, the localized area of application has to be considered. Furthermore, in producing therapeutic heat, one can expect watt levels of incident radiant energy, especially in pulsed units. There is no relation between this and occupational health standards as implied.
Show BibTeX
@article{diathermy_survey_g7226,
author = {Unknown},
title = {DIATHERMY SURVEY},
year = {1972},
}