Williams, S. N. , Noll, D. C. and Fessler, J. A. (2017) Improved Simultaneous Multislice Pulse Design Directly Constraining Peak RF Amplitude. In: 25th Annual Meeting of the International Society for Magnetic Resonance in Medicine, Honolulu, HI, USA, 22-27 April 2017,
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Abstract
In this abstract, we propose the design of SMS RF pulses using a new method based on the small-tip angle approximation that directly constrains peak amplitude using a least-square optimization. We compare our proposed method to the equivalent phase-modulated Shinnar-Le Roux (SLR) SMS pulse with optimized phase scheduling for minimal RF power. Our proposed method provides lower simulation error than SLR-based designs at equivalent pulse lengths and same error for shorter pulse lengths that are unrealizable (in the peak amplitude sense) with the SLR-based approach. In experiment we show sharp excitation slice profiles for our SMS designs.
| Item Type: | Conference Proceedings |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Williams, Dr Sydney |
| Authors: | Williams, S. N., Noll, D. C., and Fessler, J. A. |
| 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 |
| Published Online: | 22 April 2017 |
| Related URLs: |
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