RF power calibration for an MRI system using local coils

Details RF power calibration for an MRI system using local coils RF power calibration for an MRI system using local coils

1998-04-07

2000-02-15

Oda, Christine K.

Electricity: measuring and testing

Particle precession resonance

Using an electron resonance spectrometer system

324309, 324307, 600410, G01V 300

Patent

active

060257180

ABSTRACT:
An MRI system performs a calibration prescan in which NMR projection signals are produced using a calibration pulse sequence. The readout gradient employed during the acquisition of each NMR projection signal is rotated during the signal sampling such that the projection angle changes during the acquisition. The center of the field of view is weighted more heavily in the calculation of the optimal RF transmit power to provide a more accurate setting when using local coils.

REFERENCES:
patent: 4443760 (1984-04-01), Edlstein et al.
patent: 4806866 (1989-02-01), Maier et al.
patent: 5001428 (1991-03-01), Maier et al.
patent: 5107215 (1992-04-01), Schaefer et al.

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