Corpus ID: 45057400

Transmit B 1 Shimming at High Field with SAR Constraints : A Two Stage Optimization Method Independent of The Initial Set of RF Phases and Amplitudes

@inproceedings{Chang2007TransmitB1,
  title={Transmit B 1 Shimming at High Field with SAR Constraints : A Two Stage Optimization Method Independent of The Initial Set of RF Phases and Amplitudes},
  author={T. Chang and Z. Luo and X. Wu and C. Akgun and T. Vaughan and K. Uğurbil and P. V. D. Moortele},
  year={2007}
}
Introduction: There has been an increasing interest in constraining transmit B1 shimming with specific absorption rate (SAR) limits [1-2], especially at high magnetic field. Since most of the existing methods rely on solving a nonconvex optimization problem, they are typically faced with two difficulties: Only local optimum solutions are obtained, and they are susceptible to the chosen initial points for optimization. Here we introduce a two stage optimization method where a reliable initial… Expand
5 Citations
Dynamically applied B1+ shimming solutions for non‐contrast enhanced renal angiography at 7.0 tesla
  • 49
Semidefinite Relaxation of Quadratic Optimization Problems
  • 2,017
  • Highly Influenced
  • PDF
Nonconvex Quadratic Optimization , Semidefinite Relaxation , and Applications
  • 11
  • Highly Influenced
  • PDF