RF Susceptibility of an EEG and Considerations for Attenuating RFI in Hospitals |
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Authors: | Maskell Stephen J |
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Affiliation: | LBC&W/Maguire, Two Skyline Place/Suite 800, 5203 Leesburg Pike, Falls Church, VA 22041.; |
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Abstract: | This paper discusses the testing accomplished to determine the radio frequency (RF) susceptibility of a typical electroencephalograph (EEG) and to determine the effectiveness of lead X-ray shielding as an RF shield. New data are presented on threshold field strengths and frequencies which just begin to cause interference on a typical EEG brain scan. Results are combined with data from other studies to show that a typical EEG machine would be immune to the RF environment expected in the vicinity of most hospitals. Therefore, expensive RF shielding in a hospital EEG suite is usually not required. Finally, an inexpensive shielding system utilizing X-ray shielding which was developed by the U.S. Veterans Administration is presented. |
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