Diffusion measurements free of motion artifacts using intermolecular dipole-dipole interactions

Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine
S Kennedy, J Zhong

Abstract

Diffusion encoding, or diffusion weighting, is commonly achieved by applying a pair of balanced pulsed-field gradients during spin evolution. An alternative way to obtain diffusion measurements is to select dipolar correlation distances using the distant dipolar field (DDF) in systems with abundant spin density, such as water in tissues. Diffusion weighting using this effect is unique in that the refocusing "gradient" is carried within the sample, and thus the macroscopic motion of the sample is not expected to interfere with signal formation. The experiments presented here demonstrate that in moving phantoms, the phase shift of the signal due to linear motion is minimal in diffusion-weighted (DW) DDF measurements, and that motion artifacts in images of moving phantoms and the abdomen of live mice are small compared to standard pulsed-field-gradient methods. The technique may facilitate the use of DWI in typically motion-prone regions such as the abdomen, lungs, and heart.

References

Jun 1, 1991·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·R TurnerA S Chesnick
Jan 1, 1994·Magnetic Resonance Imaging·R J OrdidgeV Nagesh
Mar 22, 2000·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·J ZhongE Kwok
Dec 19, 2002·Neuroimaging Clinics of North America·Kristina SzaboMichael G Hennerici
Dec 19, 2002·NMR in Biomedicine·Mark A Horsfield, Derek K Jones
Feb 21, 2003·Annals of the New York Academy of Sciences·Shantanu Sinha, Usha Sinha
Jun 18, 2003·Journal of Magnetic Resonance·Paulo Loureiro de SousaDaniel Grucker

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Citations

Apr 2, 2013·Progress in Nuclear Magnetic Resonance Spectroscopy·Hervé Desvaux
Nov 26, 2008·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Andreas SchäferHarald E Möller
May 7, 2013·Magnetic Resonance Imaging·Chung Ki Wong
Aug 10, 2006·Journal of Magnetic Resonance Imaging : JMRI·Denis Le BihanFranck Lethimonnier
Sep 28, 2007·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Andreas Schäfer, Harald E Möller
Jan 26, 2010·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Yanqin LinJianhui Zhong
Apr 30, 2010·Physical Chemistry Chemical Physics : PCCP·Meijin LinZhong Chen
May 21, 2005·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Andreas SchäferHarald E Möller

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