Correction for gradient nonlinearity in continuously moving table MR imaging

Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine
Jason A PolzinStephen J Riederer

Abstract

Recently, a number of methods have been demonstrated for large field of view MR imaging using continuous table motion. As with conventional, fixed-table MRI, the spatial encoding is performed using magnetic field gradients. However, it is demonstrated in this work that as a consequence of every measurement being made at a slightly different displacement between the object and the gradient field, gradient nonlinearities are manifest as blurring in addition to spatial distortion. Moreover, the blurring is spatially dependent. It is also shown that correcting all phase-encoding steps individually or in groups can reduce these effects. Phantom and in vivo results are shown which demonstrate the effectiveness of the correction.

References

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Citations

Feb 4, 2005·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·David G KrugerJames F Glockner
Oct 13, 2005·Statistics in Medicine·Dan Sheng, Mimi Y Kim
Jun 27, 2008·Journal of Magnetic Resonance Imaging : JMRI·Peter Börnert, Bernd Aldefeld
Oct 10, 2014·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Shengzhen TaoMatt A Bernstein
Aug 9, 2005·Magnetic Resonance Imaging Clinics of North America·Jamal J Derakhshan, Jeffrey L Duerk
May 7, 2014·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Uten YarachOliver Speck
Dec 28, 2006·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·H P FautzS A R Kannengiesser
Mar 31, 2005·Physics in Medicine and Biology·Simon J DoranMartin O Leach
Jun 22, 2005·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Houchun H HuStephen J Riederer
Aug 9, 2005·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·David G KrugerHouchun H Hu
Aug 9, 2005·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Michael O ZengeHarald H Quick
Sep 9, 2005·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Houchun H HuStephen J Riederer
Jan 18, 2006·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Ute LudwigHans-Peter Fautz
Feb 2, 2006·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Ananth J MadhuranthakamStephen J Riederer
Mar 11, 2006·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Gregor SommerJürgen Hennig
Apr 6, 2006·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·M SabatiR Frayne
Apr 7, 2006·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Bernd AldefeldJochen Keupp
Oct 28, 2004·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Sean B FainCharles A Mistretta

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