Proceedings of the KOSOMBE Conference (대한의용생체공학회:학술대회논문집)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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Edge Enhancement due to Diffusion Effect in Magnetic Resonance Imaging

MR 영상에서 확산현상에 의한 경계강조

  • Hong, I.K. (Dept. of Information & communication Engineering, KAIST) ;
  • Ro, Y.M. (Dept. of Computer Engineering, Taejon University) ;
  • Cho, Z.H. (Dept. of Information & communication Engineering, KAIST)
  • 홍인기 (한국과학기술원 정보 및 통신공학과) ;
  • 노용만 (대전대학교 컴퓨터 공학과) ;
  • 조장희 (한국과학기술원 정보및 통신공학과)
  • Published : 1995.11.17
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Abstract

Due to the self-diffusion of nuclear spins, the edge of phantoms is enhanced in the magnetic resonance imaging (MRI), especially in the case of microscopy [1]. According to several published works, theory has been established that the edge enhancement is caused by the motion narrowing around bounded regions due to diffusions of nuclear spins during data acquisition. It is found, however, that the signal decreases due to the diffusion attenuation and image is distorted as edge of the image is sharpened. In this paper, we wilt investigate this signal loss during data acquisition and its effects on image, i.e., image edge enhancement due to the diffusion phenomenon. This result is new and different from the previously discussed edge enhancement due to the diffusion, namely, by motion narrowing effect or spin bouncing effect at the boundary.

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