• 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