Reduced-time variable rate excitation pulses for rapid MRI

Details Reduced-time variable rate excitation pulses for rapid MRI Reduced-time variable rate excitation pulses for rapid MRI

2006-05-16

2006-05-16

Shrivastav, Brij B. (Department: 2859)

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

C324S309000

Reexamination Certificate

active

07046003

ABSTRACT:
A pulse sequence for use in steady state free precession (SSFP) imaging sequences includes a RF pulse and a time-varying gradient pulse based on a conventional design algorithm such as the Shinnar-LeRoux (SLR) pulse design algorithm and in which amplitude of the RF pulse and gradient pulse are increased while pulse time is decreased thereby reducing imaging time and improving slab profiles.

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Hargreaves et al., “Variable-Rate Selective Excitation for Rapid MRI Sequences,” Magnetic Resonance in Medicine, vol. 52, pp 590-597, 2004.
Hargreaves et al., “Fat-Supressed Steady State Free Precession Imaging Using Phase Detection,” Magnetic Resonance in Medicine, vol. 50, pp 210-213, 2003.

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