A Method for RF-field Mapping Based on Fourier Transformation

Abstract

Abstract:

A Fourier Transformation (FT)-based method for measuring the RF-field distribution was proposed. This method can be easily implemented to estimate the quality of RF coils and the results obtained are not related to the inhomogeneity of the samples. Compared to the commonly used fitting method, the FT method has two advantages. Firstly, it does not require setting initial values for computation. Secondly, the proposed method is capable of detecting inslice RF field inhomogeneity of a single pixel or a small domain.

Key words: Fourier transformation, RF coil, RF-field distribution, MRI

CLC Number:

O482.23

WANG He1, ZHANG Lei2, NING Rui-peng1, LI Geng-ying1*. A Method for RF-field Mapping Based on Fourier Transformation[J]. Chinese Journal of Magnetic Resonance, 2007, 24(4): 446-453.

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