Efficient high-resolution RF pulse design applied to simultaneous multi-slice excitation

Abstract

RF pulse design via optimal control is typically based on gradient and quasi-Newton approaches and therefore suffers from slow convergence. We present a flexible and highly efficient method that uses exact second-order information within a globally convergent trust-region CG-Newton method to yield an improved convergence rate. The approach is applied to the design of RF pulses for single- and simultaneous multi-slice (SMS) excitation and validated using phantom and in-vivo experiments on a 3T scanner using a modified gradient echo sequence.

References in corpus (3)

• Second order gradient ascent pulse engineering
• Broadband 180 degree universal rotation pulses for NMR spectroscopy designed by optimal control
• Optimal control design of band-selective excitation pulses that accommodate relaxation and RF inhomogeneity

Cited by in corpus (4)

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