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Efficient method to design RF pulses for parallel excitation MRI using gridding and conjugate gradient

   
@article{QIMS3728,
	author = {Shuo Feng and Jim Ji},
	title = {Efficient method to design RF pulses for parallel excitation MRI using gridding and conjugate gradient},
	journal = {Quantitative Imaging in Medicine and Surgery},
	volume = {4},
	number = {2},
	year = {2014},
	keywords = {},
	abstract = {Parallel excitation (pTx) techniques with multiple transmit channels have been widely used in high field MRI imaging to shorten the RF pulse duration and/or reduce the specific absorption rate (SAR). However, the efficiency of pulse design still needs substantial improvement for practical real-time applications. In this paper, we present a detailed description of a fast pulse design method with Fourier domain gridding and a conjugate gradient method. Simulation results of the proposed method show that the proposed method can design pTx pulses at an efficiency 10 times higher than that of the conventional conjugate-gradient based method, without reducing the accuracy of the desirable excitation patterns.},
	issn = {2223-4306},	url = {https://qims.amegroups.org/article/view/3728}
}