Biomag 96 pp 28-31 | Cite as

Magnetic Measurement Techniques for Locating Foreign Bodies in Humans

  • E. Costa Monteiro
  • C. Kelber
  • E. Andrade Lima
  • P. Costa Ribeiro
  • A. C. Bruno
  • C. Hall Barbosa
  • E. Parente Ribeiro
  • P. Boechat

Abstract

There is a high incidence of needles accidentally introduced in the human body. The commonly used radiological techniques present several limitations. They usually do not give the appropriate informations for a surgical extraction procedure, like the depth relative to the skin and only the neddle projections are available. The development of a more accurate, non-invasive and innocuous method for a magnetic foreign body localization is of meaningful clinical importance. In this way, non-invasive magnetic field measurements, using a SQUID magnetometer, were performed to locate, for surgical purposes, needles lost in the bodies of 5 children. Also, another approach for detecting magnetic fields generated by foreign bodies, using a fluxgate magnetometer, is proposed.

Keywords

Assure Remanent Magnetization 

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References

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    Roth, B. J., Sato, 3., Accurate and efficient formulas for averaging the magnetic field over a circular coil, In: Hoke, M. et al., Biomagnetism: Clinical Aspects, Excerpta Medica, 1992, p. 797–800.Google Scholar

Copyright information

© Springer Science+Business Media New York 2000

Authors and Affiliations

  • E. Costa Monteiro
    • 1
  • C. Kelber
    • 1
  • E. Andrade Lima
    • 1
  • P. Costa Ribeiro
    • 1
  • A. C. Bruno
    • 1
  • C. Hall Barbosa
    • 1
  • E. Parente Ribeiro
    • 1
  • P. Boechat
    • 2
  1. 1.Departamento de FísicaPontifícia Universidade CatólicaRio de JaneiroBrazil
  2. 2.Hospital Fernandes FigueirasRio de JaneiroBrazil

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