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vGRASE: Separating phase and T 2 modulations in 2D
Author(s) -
Oshio Koichi
Publication year - 2000
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 - 10.1002/1522-2594(200009)44:3<383::aid-mrm7>3.0.co;2-i
Subject(s) - modulation (music) , encoding (memory) , phase (matter) , computer science , image quality , sequence (biology) , phase modulation , image (mathematics) , algorithm , artificial intelligence , pattern recognition (psychology) , physics , chemistry , acoustics , biochemistry , quantum mechanics
Abstract A new fast imaging technique, vGRASE, was designed and implemented on a clinical imager. In the vGRASE scheme, the T 2 modulation ghost, which is the main problem of the GRASE sequence, can be reduced by separating the phase and T 2 modulations in two encoding directions. Although it is not much faster than the original GRASE, vGRASE has much improved image quality, with the same advantages over RARE and EPI as the original GRASE. Magn Reson Med 44:383–386, 2000. © 2000 Wiley‐Liss, Inc.