Optimal design of k-space trajectories using a multi-objective genetic algorithm

Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine
Brian M DaleJeffrey L Duerk

Abstract

Spiral, radial, and other nonrectilinear k-space trajectories are an area of active research in MRI due largely to their typically rapid acquisition times and benign artifact patterns. Trajectory design has commonly proceeded from a description of a simple shape to an investigation of its properties, because there is no general theory for the derivation of new trajectories with specific properties. Here such a generalized methodology is described. Specifically, a multi-objective genetic algorithm (GA) is used to design trajectories with beneficial flow and off-resonance properties. The algorithm converges to a well-defined optimal set with standard spiral trajectories on the rapid but low-quality end, and a new class of trajectories on the slower but high-quality end. The new trajectories all begin with nonzero gradient amplitude at the k-space origin, and curve gently outward relative to standard spirals. Improvements predicted in simulated imaging experiments were found to correlate well with improvements in actual experimental measures of image quality. The impact of deviations from the desired k-space trajectory is described, as is the impact of using different phantoms.

References

Dec 1, 1992·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·C H MeyerA Macovski
Dec 1, 1992·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·G H Glover, J M Pauly
Jan 1, 1987·Magnetic Resonance Imaging·R E HendrickD D Stark
Apr 1, 1995·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·D G NishimuraC H Meyer
Apr 1, 1993·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·O P SimonettiV Chankong
Jan 1, 1997·Magnetic Resonance Imaging·B J FisherL D Hall
May 15, 1998·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·D C NollF E Boada
Jun 6, 1998·Journal of Magnetic Resonance·J H DuynJ W van der Veen
May 20, 1999·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·J M Star-Lack
Jun 18, 1999·Magnetic Resonance Imaging·G B WilliamsL D Hall
Sep 30, 1999·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·J G Pipe
Nov 11, 1999·Magma·P BörnertJ Groen
Jan 22, 2000·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·D C PetersC A Mistretta
Mar 22, 2000·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·C M Tsai, D G Nishimura
Sep 7, 2000·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·P BörnertH Eggers
Nov 7, 2000·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·H MoriguchiJ L Duerk
Feb 24, 2001·IEEE Transactions on Medical Imaging·Y Gao, S J Reeves
May 9, 2001·IEEE Transactions on Medical Imaging·B DaleJ L Duerk
Dec 18, 2001·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·A C Larson, O P Simonetti
Oct 16, 2003·Magnetic Resonance Imaging·Sebastian SabatPablo Irarrazaval
Jan 1, 1985·IEEE Transactions on Medical Imaging·J D O'Sullivan
Jan 1, 1986·IEEE Transactions on Medical Imaging·C B AhnZ H Cho

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Citations

Jul 8, 2008·International Journal of Biomedical Imaging·Andrew Thomas Curtis, Christopher Kumar Anand
Jun 11, 2008·IEEE Transactions on Medical Imaging·Michael LustigJohn M Pauly
Nov 18, 2005·Journal of Magnetic Resonance·Alexandre A KhrapitchevBruce J Balcom
Aug 6, 2015·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Kelvin J LaytonMaxim Zaitsev
Dec 2, 2006·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Youngkyoo JungWalter F Block

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