DocumentCode
798383
Title
Magnetic pull: biological effects or medical applications?
Author
Bansal, Rajeev
Author_Institution
Connecticut Univ., Storrs, CT, USA
Volume
6
Issue
4
fYear
2005
fDate
12/1/2005 12:00:00 AM
Firstpage
54
Lastpage
56
Abstract
One of the questions on the IMS 2005 Quiz, is related to the magnetic fields used in magnetic resonance imaging (MRI) machines. In particular, it asked: an MRI (magnetic resonance imaging) machine uses: a) high-intensity static magnetic fields; b) time-varying magnetic fields in the kHz range; c) radio-frequency (RF) fields in the MHz range; and d) All of the above. The correct answer, d) All of the above, highlights the fact that an MRI machine employs all three types of fields in order to accomplish three-dimensional imaging for medical diagnostics. Therefore, in terms of safety, electromagnetic field exposure to patients and medical personnel needs to be assessed for all three types of fields. This is a much greater concern for open MRI systems, where the magnet surrounds the patient only partially in order to allow the medical personnel to perform procedures on the patient, guided by the MRI images. The IEEE Committee on Man and Radiation (COMAR) is in the final stages of preparing a technical information statement (TIS) on the subject.
Keywords
biological effects of fields; biomedical MRI; magnetic field effects; patient diagnosis; 3D imaging; Committee on Man and Radiation; MRI images; electromagnetic field exposure; high-intensity static magnetic fields; magnetic pull; magnetic resonance imaging machines; medical diagnostics; open MRI systems; radio-frequency fields; technical information statement; time-varying magnetic fields; Biomedical equipment; Biomedical imaging; Magnetic fields; Magnetic resonance imaging; Medical diagnosis; Medical diagnostic imaging; Medical services; Personnel; Radio frequency; Safety;
fLanguage
English
Journal_Title
Microwave Magazine, IEEE
Publisher
ieee
ISSN
1527-3342
Type
jour
DOI
10.1109/MMW.2005.1580331
Filename
1580331
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