Scan controller for NMR imaging device

Details Scan controller for NMR imaging device Scan controller for NMR imaging device

1989-08-23

1990-09-04

Williams, Hezron E.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

G01R 3320

Patent

active

049547801

ABSTRACT:
A scan controller for an NMR imaging device, wherein the scan controller stores control signal waveforms in a waveform memory; stores control signal amplitudes in an amplitude memory; stores data related to the control signal duration in a time memory; reads the waveform memory by using an address counter which operates based on data read out from the time memory and outputs the waveform memory read out value after conversion to analog. The amplitude of the control signal is multiplied by the waveform of the control signal and converted from digital data to analog so that the resulting amplitude is related to the amplitude of the signal stored in the amplitude memory. In this manner high amplitude resolution is attained and requirement for large scale memory capacity is reduced.

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patent: 4651097 (1987-03-01), Iwaoka et al.
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