Broadband nuclear magnetic resonance pulses with two-dimensional spatial selectivity
- 15 August 1989
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 66 (4), 1513-1516
- https://doi.org/10.1063/1.344411
Abstract
Two-dimensional spatial localization can be achieved using a single nuclear magnetic resonance (NMR) pulse if the pulse is applied in the presence of a magnetic field gradient which is reorienting through two dimensions. The application of these pulses to whole-body NMR imaging systems is hampered, however, by amplitude and slew-rate constraints on the magnetic field gradients, resulting in longer pulses with relatively limited bandwidth. We describe here a variable rate method for shortening these pulses by as much as 36% for pulses limited by slew rate and 55% for pulses limited by gradient amplitude, without changing their spatial excitation profiles on resonance.Keywords
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