Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Patent
1997-04-18
1999-06-22
Barlow, Jr., John E.
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
600414, 600421, G01V 300
Patent
active
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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Barlow Jr. John E.
Shrivastav Brij B.
Siemens Aktiengesellschaft
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