A fast pulse design for parallel excitation with gridding conjugate gradient. Academic Article

abstract

• Parallel excitation (pTx) is recognized as a crucial technique in high field MRI to address the transmit field inhomogeneity problem. However, it can be time consuming to design pTx pulses which is not desirable. In this work, we propose a pulse design with gridding conjugate gradient (CG) based on the small-tip-angle approximation. The two major time consuming matrix-vector multiplications are substituted by two operators which involves with FFT and gridding only. Simulation results have shown that the proposed method is 3 times faster than conventional method and the memory cost is reduced by 1000 times.

authors

• Ji, Jim

published proceedings

• Annu Int Conf IEEE Eng Med Biol Soc

author list (cited authors)

• Feng, S., & Ji, J.

citation count

• 0

complete list of authors

• Feng, Shuo||Ji, Jim

publication date

• July 2013

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

published in

• Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference  Journal

keywords

• Algorithms
• Magnetic Resonance Imaging
• Radio Waves

Digital Object Identifier (DOI)

• 10.1109/EMBC.2013.6609694

start page

• 1089

end page

• 1092

volume

• 2013

URL

• http://dx.doi.org/10.1109/embc.2013.6609694