MR involving high speed coil mode switching between...

Details MR involving high speed coil mode switching between... MR involving high speed coil mode switching between...

2011-08-02

2011-08-02

Vargas, Dixomara (Department: 2858)

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

Reexamination Certificate

active

07990149

ABSTRACT:
Hybrid circuitry (40, 40′, 40″) for operatively coupling a radio frequency drive signal (70) with a quadrature coil (30) is configurable in one of at least two coil modes of a group consisting of: (i) a linear I channel mode in which an I channel input port (42) is driven without driving a Q channel input port (44); (ii) a linear Q channel mode in which the Q channel input port is driven without driving the I channel input port; (iii) a quadrature mode in which both the I and Q channel input ports are driven with a selected positive phase difference; and (iv) an anti quadrature mode in which both the I and Q channel input ports are driven with a selected negative phase difference. A temporal sequence of the at least two coil modes may be determined and employed to compensate for B1inhomogeneity.

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