대한전자공학회:학술대회논문집 (Proceedings of the IEEK Conference)
- 대한전자공학회 2005년도 추계종합학술대회
- /
- Pages.343-346
- /
- 2005
웨이블릿 부호화 자기공명영상
Wavelet Encoded MR Imaging
- Kim, Eung-Kyeu (Division of Information Communication & Computer Eng., College of Engineering, Hanbat National University) ;
- Lee, Soo-Jong (Speech/Language Information Research Department, ETRI)
- 발행 : 2005.11.26
초록
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.
키워드