Wavelet Encoded MR Imaging

웨이블릿 부호화 자기공명영상

  • Kim, Eung-Kyeu (Division of Information Communication & Computer Eng., College of Engineering, Hanbat National University) ;
  • Lee, Soo-Jong (Speech/Language Information Research Department, ETRI)
  • 김응규 (한밭대학교 공과대학 정보통신,컴퓨터공학부) ;
  • 이수종 (한국전자통신연구원 음성/언어정보연구부)
  • Published : 2005.11.26


In this study, a basic concept of wavelet encoding and its advantages over Fourier based phase encoding application. Wavelet encoding has been proposed as an alternative way to Fourier based phase encoding in magnetic resonance imaging. In wavelet encoding, the RF pulse is designed to generate wavelet-shaped excitation profile of spins. From the resulting echo signals, the wavelet transform coefficients of spin distribution are acquired and an original spin density is reconstructed from wavelet expansion. Wavelet encoding has several advantages over phase encoding. By minimizing redundancy of the data acquisition in a dynamic series of images, we can avoid some encoding steps without serious loss of quality in reconstructed image. This strategy may be regarded as data compression during imaging. Although there are some limitations in wavelet encoding, it is a promising scheme in a dynamic imaging.