Method for compensating an MRI system for time dependent gradien

Details Method for compensating an MRI system for time dependent gradien Method for compensating an MRI system for time dependent gradien

1997-12-15

2000-02-15

Oda, Christine K.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324320, 600419, G01V 300

Patent

active

060257156

ABSTRACT:
An MRI system performs a calibration procedure to calculate optimal compensation parameter values for a pre-emphasis filter that alters the shape of gradient waveforms. The gradient field errors are measured using a series of pulse sequences in which different compensation parameter values are sampled. The measured errors are used to calculate a gradient error function and the optimal compensation parameter values are calculated by finding the minimum in the gradient error function.

REFERENCES:
patent: 4591789 (1986-05-01), Glover et al.
patent: 4698591 (1987-10-01), Glover et al.
patent: 4950994 (1990-08-01), Glover et al.
Response Surface Methodology, Ch. 1, pp. 1-11.

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