An iterative technique for refinement of RF pulses for magnetic resonance imaging

Author

Lebsack, Eliot T. ; Wright, Steven M.

Author_Institution

Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA

Volume

6

fYear

1997

fDate

30 Oct-2 Nov 1997

Firstpage

2563

Abstract

Recent advances in non-Fourier-based magnetic resonance imaging (MRI) methods have treated a need for spatially-selective RF pulses. In applications such as wavelet encoded imaging, narrow profile excitations are necessary for effective image reconstructions. In this paper we discuss problems with Fourier-based imaging, and then present an iterative technique which is implemented on a host imaging computer. This method of RF pulse optimization produces considerably accurate pulses for certain target profiles

Keywords

Haar transforms; biomedical MRI; image reconstruction; iterative methods; medical image processing; wavelet transforms; Fourier-based imaging problems; Haar wavelet; RF pulse optimization; effective image reconstruction; inverse FT; iterative technique; magnetic resonance imaging; narrow profile excitations; refinement of RF pulses; spatially-selective RF pulses; wavelet encoded imaging; Equations; Fourier transforms; Linearity; Magnetic resonance imaging; Magnetization; Optimization methods; Pulse shaping methods; RF signals; Radio frequency; Shape;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1997. Proceedings of the 19th Annual International Conference of the IEEE

Conference_Location

Chicago, IL

ISSN

1094-687X

Print_ISBN

0-7803-4262-3

Type

conf

DOI

10.1109/IEMBS.1997.756853

Filename

756853