Proceedings of the KOSOMBE Conference (대한의용생체공학회:학술대회논문집)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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Observation of Susceptibility Change in fMRI Using SSFP Interferometry (SSFPI) Technique

핵자기 뇌기능 영상에서 SSFPI 기법을 이용한 자화율효과의 관찰

  • Chung, J.Y. (Department of Information and Communication, KAIST) ;
  • Chung, S.C. (Department of Information and Communication, KAIST) ;
  • Ro, Y.M. (Department of Computer Engineering, Taejon University) ;
  • Cho, Z.H. (Department of Information and Communication, KAIST)
  • 정준영 (한국과학기술원 정보 및 통신공학과) ;
  • 정순철 (한국과학기술원 정보 및 통신공학과) ;
  • 노용만 (대전대학교 컴퓨터공학과) ;
  • 조장희 (한국과학기술원 정보 및 통신공학과)
  • Published : 1995.11.17
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Abstract

We have developed a fast steady state free precession interferometry (SSFPI) technique which is useful for the fMRI (functional Magnetic Resonance Imaging). As is known, SSFP sequence with a suitable adjustment of gradient (readout) allows us to measure precession angle $\theta$ which is in turn related to the field inhomogeneity [1-3]. When the method is applied to the susceptibility effect based functional magnetic resonance imaging (fMRI), it was found that the direct susceptibility effect measurement was possible without perturbations such as the backgrounds and inflow effect. In this paper, simulation results and experimental results obtained with 2.0 Tesla MRI system are also presented.

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