Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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Effects of Temperature Change on the Current Injected MRI

전류 주입 자기공명영상에 온도 변화가 미치는 영향

  • 이수열 (경희대학교 동서의학대학원 의료공학전공) ;
  • 강현수 (경희대학교 동서의학대학원 의료공학전공) ;
  • 우응제 (경희대학교 동서의학대학원 의료공학전공) ;
  • 조민형 (경희대학교 동서의학대학원 의료공학전공)
  • Published : 2001.06.01
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Abstract

It is well known that the electrical impedance of biological tissues is very sensitive to their temperature. In this paper, we have analyzed the effects of temperature change on the phase of magnetic resonance images obtained with external current injection. It has been found that the local phase in the current injected magnetic resonance image can be changed noticeably when local temperature change appears at a part of the tissue. At the experiments with a 0.3 Tesla MRI system, we observed the local phase changes at the phantom images when the phantom temperature was varied between 25 -45$^{\circ}C$. We think that the current injection MRI technique can be used for in-vivo monitoring of the temperature inside biiological tissues if the relation between the local temperature and phase can be quantified.

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References

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