Coil reduction in parallel excitation with large array. Academic Article

abstract

• Parallel excitation using coil array has been introduced in MRI as an effective method to design multi-dimensional spatially selective RF pulses. Generally, all transmit coil elements are used simultaneously in parallel excitation. In case of large array, RF pulse design requires significant computation time and memory size. In this paper, a method using reduced number of coils for parallel excitation is proposed to take advantage of localized coil transmit sensitivity in large array. Specifically, a subset of coils in the large array can be selected based on coil sensitivity coverage and desired excitation pattern. Simulation results with both spiral and EPI k-space trajectories show that proposed method is effective in achieving high excitation resolution at different acceleration factors while the computation time and memory requirement are greatly reduced.

authors

• Ji, Jim

published proceedings

• Annu Int Conf IEEE Eng Med Biol Soc

altmetric score

• 3

author list (cited authors)

• Feng, S., & Ji, J.

citation count

• 0

complete list of authors

• Feng, Shuo||Ji, Jim

publication date

• August 2010

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

published in

• n2375-7477ISSN  Journal

keywords

• Computer-Aided Design
• Equipment Design
• Equipment Failure Analysis
• Image Enhancement
• Magnetic Resonance Imaging
• Magnetics
• Phantoms, Imaging
• Reproducibility Of Results
• Sensitivity And Specificity

Digital Object Identifier (DOI)

• 10.1109/IEMBS.2010.5627495

start page

• 3313

end page

• 3316

volume

• 2010

URL

• http://dx.doi.org/10.1109/iembs.2010.5627495