Chemical shift imaging with field inhomogeneity correction

Details Chemical shift imaging with field inhomogeneity correction Chemical shift imaging with field inhomogeneity correction

1985-07-15

1987-04-28

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324312, G01R 3320

Patent

active

046617752

ABSTRACT:
In an NMR system, two chemical shift components are separated by correcting NMR data for field inhomogeneity. A first image data set is acquired which contains no chemical shift information or field inhomogeneity. A second image data set is acquired which contains both chemical shift information and field inhomogeneity. A third image data set is acquired which contains field inhomogeneity information. The first and third image data sets are combined to identify the field inhomogeneity information. This intermediate field image is then used to correct the second image data set for field inhomogeneity. The first image data set and corrected second image data set may then be combined by magnitude reconstruction of complex sums and differences to separate the two chemical shift components.

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A. A. Maudsley and S. K. Hilal, Field Inhomogeneity Correction and Data Processing for Spectroscopic Imaging, Magnetic Resonance in Medicine, vol. 2, 1985, pp. 218-233.

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