RF pulses with built-in saturation sidebands for MRI...

Details RF pulses with built-in saturation sidebands for MRI... RF pulses with built-in saturation sidebands for MRI...

2005-11-15

2005-11-15

Arana, Louis (Department: 2859)

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

C324S300000

Reexamination Certificate

active

06965234

ABSTRACT:
A RF Excitation pulse for MRI applications has built-in saturation sidebands, thereby reducing the time for an excitation sequence. The pulse is created using the Shinnar-Le Roux (SLR) transform and designing beta-polynomials for a desired image slice excitation and for saturation of RF excitation such as by de-phasing in regions adjacent to the desired image slice. The beta-polynomials are combined and an inverse SLR transform creates the RF pulse from the combined beta-polynomial.

REFERENCES:
patent: 4940940 (1990-07-01), Leroux
patent: 5235280 (1993-08-01), Deimling
patent: 5821752 (1998-10-01), LeRoux
patent: 6028428 (2000-02-01), Cunningham
patent: 6853192 (2005-02-01), Heid
Cunningham et al., “RF Pulses with Built-In Saturation Sidebands”, International Society for Magnetic Resonance in Medicine, May 2004, 1 Page.

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