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Reduced k ‐space encoding for dual‐contrast TrueFISP imaging
Author(s) -
Merrifield Robert,
Keegan Jennifer,
Firmin David,
Yang GuangZhong
Publication year - 2003
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.10374
Subject(s) - contrast (vision) , k space , computer science , artificial intelligence , flip angle , sampling (signal processing) , encoding (memory) , image contrast , cluster analysis , computer vision , magnetic resonance imaging , radiology , medicine , filter (signal processing)
Dual‐contrast TrueFISP imaging relies on the use of two RF pulses with different RF flip‐angles for enhancing image contrast and performing automatic tissue classification based on multispectrum clustering. The original technique, however, involves an extended imaging time, which limits its clinical application. The purpose of this study is to compare the applicability of two reduced k ‐space sampling techniques, reduced imaging using generalized series reconstruction (RIGR) and key‐hole imaging, for minimizing the imaging time required. The performance of both approaches was evaluated theoretically and practically using 3D cine datasets acquired from eight asymptomatic subjects. Magn Reson Med 49:595–598, 2003. © 2003 Wiley‐Liss, Inc.