Optimized gradient waveforms for spiral scanning.

K F King; T K Foo; C R Crawford

doi:10.1002/mrm.1910340205

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PubMed · 7476073

Optimized gradient waveforms for spiral scanning.

K F King·T K Foo·C R Crawford

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Abstract

Spiral scanning gradient waveforms can be optimized with respect to blurring from off-resonance effects by minimizing the readout time. This is achieved by maximizing the gradient amplitude during the scan so that the edge of k-space is reached as quickly as possible. Gradient hardware constraints are incorporated by considering a circuit model for the gradient coil and amplifier. The optimized gradient waveforms are determined by a set of coupled differential equations. The resulting solutions have shorter readout time than solutions that do not consider the circuit model.

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Acceleration Algorithms Amplifiers, Electronic Equipment Design Image Enhancement Magnetic Resonance Imaging Models, Structural Time Factors Journal Article

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K F King, T K Foo, C R Crawford. 1995. Optimized gradient waveforms for spiral scanning.. https://doi.org/10.1002/mrm.1910340205

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