Method for determining the time curve of the basic field of a nu

Electricity: measuring and testing – Particle precession resonance – Spectrometer components

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600414, 600421, G01V 300

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059146010

ABSTRACT:
In a method for determining the time curve of the basic field of a nuclear magnetic resonance tomography apparatus under switched gradients, a phase-encoding gradient Gvx is prefixed to a readout gradient Gox. The time position of the signal maximum of a nuclear magnetic resonance signal S under the readout gradient Gox is determined. This is repeated n times with different gradient time surfaces of the phase-encoding gradient. The curve of the phase position over the temporal position of the signal maxima yields the phase error that occurs due to fluctuations of the basic magnetic field.

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"A Method For Measuring Field-Gradient Modulation Shapes. Application to High-Speed Spectroscopic Imaging," Onodera et al., SMRM Abstracts, 1986 pp. 1398-1399.

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