Williams, S. N. , Nielsen, J.-F., Fessler, J. A. and Noll, D. C. (2018) Slab-Selective Spectral and Spectral-Spatial Prewinding RF Pulses. In: ISMRM-ESMRMB Joint Annual Meeting, Paris, France, 16-21 June 2020,
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Abstract
We introduce a new type of small-tip angle prewinding RF pulse that compensates for spin dephasing attributed to off-resonance and is also slab-selective, which can help limit the volume of coverage. We design purely spectral slab-selective pulses that prewind a limited global off-resonance bandwidth, and spectral-spatial slab-selective pulses that adapt the prewinding bandwidth spatially. We demonstrate these pulse designs in simulation and in experiments using a gel phantom with a distorted field and a volunteer's brain. Both pulses create sharp slab profiles, while the spectral-spatial pulse outperforms in terms of target magnetization phase.
| Item Type: | Conference Proceedings |
|---|---|
| Additional Information: | This work was supported by NIH Grant R01EB023618. |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Williams, Dr Sydney |
| Authors: | Williams, S. N., Nielsen, J.-F., Fessler, J. A., and Noll, D. C. |
| Subjects: | Q Science > Q Science (General) Q Science > QC Physics R Medicine > R Medicine (General) T Technology > T Technology (General) |
| College/School: | College of Medical Veterinary and Life Sciences > School of Psychology & Neuroscience |
| Research Group: | fMRI Laboratory, University of Michigan |
| ISSN: | 1545-4428 |
| Related URLs: |
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