Single-shot, B1-insensitive slice selection with a gradient-modulated adiabatic pulse, BISS-8
✍ Scribed by Robin A. de Graaf; Klaas Nicolay; Michael Garwood
- Book ID
- 102953692
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 625 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0740-3194
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✦ Synopsis
Abstract
An adiabatic pulse has been developed to accomplish uniform slice‐selective excitation with a spatially inhomogeneous B~1~. This new pulse can generate a uniform, arbitrary flip angle that is determined by four adjustable phase shifts in the pulse. Self‐refocused slice selection is achieved by modulating a B~o~ gradient in concert with the pulse frequency (or phase) modulation. B~1~‐compensated, self‐refocused slice selection is demonstrated in computer simulations and phantom experiments using a surface transmitter/receiver coil. This adiabatic pulse can provide optimal performance in multislice MRI and localized spectroscopy when transmitting with an inhomogeneous B~1~.