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Small tip angle three‐dimensional tailored radiofrequency slab‐select pulse for reduced B 1 inhomogeneity at 3 T
Author(s) -
Saekho Suwit,
Boada Fernando E.,
Noll Douglas C.,
Stenger V. Andrew
Publication year - 2005
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.20358
Subject(s) - slab , imaging phantom , pulse (music) , electromagnetic coil , physics , radiofrequency coil , optics , artifact (error) , nuclear magnetic resonance , reduction (mathematics) , flip angle , materials science , computer science , magnetic resonance imaging , mathematics , geometry , medicine , artificial intelligence , radiology , quantum mechanics , geophysics , detector
Abstract This work presents a small tip‐angle 3D tailored RF slab‐select pulse for reducing the B 1 field inhomogeneity at 3T. The compensated slice profile was determined from a B 1 inhomogeneity map. SNR improvement and degree of artifact reduction were evaluated in a NiCl 2 doped phantom and human brains. The technique was found to reduce inhomogeneities as large as 30% of the peak image magnitude in all three spatial directions in the brain using a standard head coil. Magn Reson Med 53:479–484, 2005. © 2005 Wiley‐Liss, Inc.