Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Reexamination Certificate
2006-11-28
2006-11-28
Shrivastav, Brij B. (Department: 2859)
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
C324S318000
Reexamination Certificate
active
07141980
ABSTRACT:
An apparatus for enabling operation of adjacent coil loops with a magnetic resonance system. The apparatus includes a correction network interconnecting the coil loops for enabling both concurrent and separate operation of the coil loops. The correction network includes an input network for each coil loop and an isolation circuit. Each input network includes a balun and an active decoupling circuit for interconnecting the coil loop and balun. The balun links the input network to the MR system. The active decoupling circuits are capable of being (A) activated concurrently thereby disabling both loops during the transmit cycle, (B) deactivated concurrently thereby enabling each loop to receive MR signals during the receive cycle and (C) deactivated/activated separately thereby enabling either one but not both loops to receive MR signals during the receive cycle. The isolation circuit interconnects the loops for substantially canceling mutual inductance between them while they are enabled concurrently.
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Adams Bradley J.
Augustine Lisa A.
Bell, Jr. Robert S.
Belt Kenneth W.
Lewandowski Stanley R.
Bradley Gregory L.
Medrad Inc.
Shrivastav Brij B.
Stevenson James R.
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