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Article
Optimal Control Design of Band-Selective Excitation Pulses That Accommodate Relaxation and RF Inhomogeneity
Journal of Magnetic Resonance
  • Naum I. Gershenzon, Wright State University - Main Campus
  • Thomas E. Skinner, Wright State University - Main Campus
  • M. Nimbalkar
  • Steffen J. Glaser
Document Type
Article
Publication Date
4-1-2012
Abstract
Existing optimal control protocols for mitigating the effects of relaxation and/or RF inhomogeneity on broadband pulse performance are extended to the more difficult problem of designing robust, refocused, frequency selective excitation pulses. For the demanding case of T1 and T2 equal to the pulse length, anticipated signal losses can be significantly reduced while achieving nearly ideal frequency selectivity. Improvements in performance are the result of allowing residual unrefocused magnetization after applying relaxation-compensated selective excitation by optimized pulses (RC-SEBOPs). We demonstrate simple pulse sequence elements for eliminating this unwanted residual signal.
DOI
10.1016/j.jmr.2012.02.007
Citation Information
Naum I. Gershenzon, Thomas E. Skinner, M. Nimbalkar and Steffen J. Glaser. "Optimal Control Design of Band-Selective Excitation Pulses That Accommodate Relaxation and RF Inhomogeneity" Journal of Magnetic Resonance Vol. 217 (2012) p. 53 - 60 ISSN: 1090-7807
Available at: http://works.bepress.com/thomas_skinner/11/