Rotating frame imaging system

Details Rotating frame imaging system Rotating frame imaging system

1992-05-18

1994-03-01

Arana, Louis

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324307, G01V 300

Patent

active

052911381

ABSTRACT:
Following the polarizing of the magnetic moments in an object using a pulsed field the moment distribution is imaged in the rotating frame by exciting the magnetic moments using a radio-frequency gradient field and a radio-frequency bias field whose phase is cyclically oscillated to prevent the loss of signal due to inhomogeniety. To increase the signal-to-noise ratio coils are used to pick up the signals at quadrature positions. A constant gradient is used for spatial selectivity through saturation.

REFERENCES:
patent: 4703274 (1987-11-01), Kaufman et al.

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