An analysis of RF pulse apodization in parallel spatially selective excitation. Academic Article

abstract

• This paper presents an analysis of the effect of RF apodization for parallel spatially selective excitation in MRI. Using the small tip-angle approximation and the k-space interpretation, the analysis shows that for multidimensional multi-channel parallel excitation, limited RF pulse duration can lead to ringing excitation artifacts, similar to the truncation artifacts. Proper weighting of RF pulses can significantly reduce these artifacts, which is important for restricting field of excitation with minimal side lobes. Simulation results using a four-channel system in 1-D and 2-D experiments were shown to verify the analysis.

authors

• Ji, Jim

published proceedings

• Conf Proc IEEE Eng Med Biol Soc

author list (cited authors)

• Liu, Y., & Ji, J. X.

citation count

• 0

complete list of authors

• Liu, Yinan||Ji, Jim X

publication date

• August 2006

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

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

Digital Object Identifier (DOI)

• 10.1109/IEMBS.2006.259831

start page

• 276

end page

• 279

volume

• 2006

URL

• http://dx.doi.org/10.1109/iembs.2006.259831