Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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Development of Vibrator for Magnetic Resonance Elastography

자기공명 탄성계수 영상법을 위한 진동기의 개발 및 기초실험

  • Lee, Tae-Hwi (Department of Biomedical Engineering College of Electronics and Information, Kyung Hee University) ;
  • Suh, Yong-Seon (Department of Biomedical Engineering College of Electronics and Information, Kyung Hee University) ;
  • Kim, Young-Tea (Department of Biomedical Engineering College of Electronics and Information, Kyung Hee University) ;
  • Lee, Byung-Il (Department of Biomedical Engineering College of Electronics and Information, Kyung Hee University) ;
  • Woo, Eung-Je (Department of Biomedical Engineering College of Electronics and Information, Kyung Hee University)
  • 이태휘 (경희대학교 전자정보대학 동서의료공학과) ;
  • 서용선 (경희대학교 전자정보대학 동서의료공학과) ;
  • 김영태 (경희대학교 전자정보대학 동서의료공학과) ;
  • 이병일 (경희대학교 전자정보대학 동서의료공학과) ;
  • 우응제 (경희대학교 전자정보대학 동서의료공학과)
  • Published : 2007.02.28
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Abstract

Elasticity is an important physical property of biological tissues. Differences in elasticity can help facilitate the diagnosis of tumors and their extent. Magnetic Resonance Elastography (MRE) tries to visualize images of tissue elasticity by externally applying shear stress on the surface of an imaging object. Applied shear stress induces internal displacements that can be measured from MR phase images. In order to conduct MRE imaging experiments, we need to first develop a vibrator. We found that there does not exist enough technical information to design the MRE vibrator. In this paper, we describe the theory, design and construction of an MRE vibrator. We report the performance of the developed vibrator using two different test methods. We found that the vibrator successfully induces enough internal displacements that can be imaged using an MRI scanner. We suggest future studies of numerous MRE imaging experiments using the vibrator.

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References

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