Methods and apparatus for imaging systems

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

Reexamination Certificate

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C324S318000

Reexamination Certificate

active

06960914

ABSTRACT:
A method of operating an imaging system having a main coil and a shield coil electromagnetically coupled to the main coil, wherein the method includes monitoring for an external environmental fluctuation of electromagnetism, and controlling current flow through the main and shield coils based upon the monitoring using a quench heater.

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