Improved fat-water reconstruction algorithm with graphics hardware acceleration.

Journal of Magnetic Resonance Imaging : JMRI
David JohnsonDavid Wilson

Abstract

To develop a fast and robust Iterative Decomposition of water and fat with Echo Asymmetry and Least-squares (IDEAL) reconstruction algorithm using graphics processor unit (GPU) computation. The fat-water reconstruction was expedited by vectorizing the fat-water parameter estimation, which was implemented on a graphics card to evaluate potential speed increases due to data-parallelization. In addition, we vectorized and compared Brent's method with golden section search for the optimization of the unknown field inhomogeneity parameter (psi) in the IDEAL equations. The algorithm was made more robust to fat-water ambiguities using a modified planar extrapolation (MPE) of psi algorithm. As compared to simple planar extrapolation (PE), the use of an averaging filter in MPE made the reconstruction more robust to neighborhoods poorly fit by a two-dimensional plane. Fat-water reconstruction time was reduced by up to a factor of 11.6 on a GPU as compared to CPU-only reconstruction. The MPE algorithms incorrectly assigned fewer pixels than PE using careful manual correction as a gold standard (0.7% versus 4.5%; P < 10(-4)). Brent's method used fewer iterations than golden section search in the vast majority of pixels (6.8 +/- 1.5 versus ...Continue Reading

References

Jan 6, 2004·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Scott B ReederNorbert J Pelc
Mar 22, 2005·Journal of Magnetic Resonance Imaging : JMRI·Jürgen MachannFritz Schick
Aug 11, 2005·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Scott B ReederNorbert J Pelc
Sep 6, 2005·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Huanzhou YuNorbert J Pelc
Feb 29, 2008·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Michael S HansenThomas S Sorensen
Feb 29, 2008·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·D HernandoZ-P Liang
Jun 27, 2008·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Wenmiao Lu, Brian A Hargreaves
Sep 30, 2008·Journal of Magnetic Resonance Imaging : JMRI·David H JohnsonDavid L Wilson
Feb 4, 2009·IEEE Transactions on Medical Imaging·Mathews Jacob, Bradley P Sutton

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Citations

Nov 30, 2011·Molecular Imaging and Biology : MIB : the Official Publication of the Academy of Molecular Imaging·Mohammed Q QutaishDavid L Wilson
Jul 23, 2011·Medical Physics·Guillem Pratx, Lei Xing
May 19, 2011·Journal of Magnetic Resonance Imaging : JMRI·Sreenath NarayanDavid L Wilson
Nov 19, 2011·Journal of Magnetic Resonance Imaging : JMRI·David H JohnsonChris A Flask
Oct 2, 2012·Journal of Magnetic Resonance Imaging : JMRI·Sreenath NarayanDavid L Wilson
Aug 3, 2013·Medical Image Analysis·Anders EklundStephen M LaConte
Feb 26, 2019·Basic & Clinical Pharmacology & Toxicology·Morando Soffritti, Livio Giuliani

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