@article {271,
	title = {{\textquoteright}Ex situ{\textquoteright} magnetic resonance volume imaging},
	journal = {Chemical Physics Letters},
	volume = {467},
	year = {2009},
	note = {Chem Phys Lett386VCTimes Cited:2Cited References Count:25},
	month = {Jan 5},
	pages = {398-401},
	abstract = {<p>The portable NMR community has introduced advances that have allowed for a variety of studies. Imaging of static and moving objects has almost become standardized. The inherent static field gradients of portable systems have, however, limited such studies to imaging of slices perpendicular to the main gradient; full volume imaging in transportable, open systems has not been actively pursued. We present a true three-dimensional image of a phantom in an ex situ, electromagnet-based system. The basic concepts and designs put forth here extend in a straightforward fashion to higher fields and imaging of larger samples by ex situ methodologies. (C) 2008 Elsevier B.V. All rights reserved.</p>
},
	keywords = {array},
	isbn = {0009-2614},
	doi = {Doi 10.1016/J.Cplett.2008.11.069},
	url = {<Go to ISI>://WOS:000261909700037},
	author = {Demas, V. and Franck, J. M. and Bouchard, L. S. and Sakellariou, D. and Meriles, C. A. and Martin, R. and Prado, P. J. and Bussandri, A. and Reimer, J. A. and Pines, A.}
}
@article {270,
	title = {Shimmed matching pulses: Simultaneous control of rf and static gradients for inhomogeneity correction},
	journal = {Journal of Chemical Physics},
	volume = {131},
	year = {2009},
	note = {J Chem Phys536HUTimes Cited:4Cited References Count:30},
	month = {Dec 21},
	abstract = {<p>Portable NMR systems generally suffer from poor field homogeneity and are therefore used more commonly for imaging and relaxation measurements rather than for spectroscopy. In recent years, various approaches have been proposed to increase the sample volume that is usable for spectroscopy. These include approaches based on manual shimming and those based on clever combinations of modulated radio frequency and gradient fields. However, this volume remains small and, therefore, of limited utility. We present improved pulses designed to correct for inhomogeneous dispersion across wide ranges of frequency offsets without eliminating chemical shift or spatial encoding. This method, based on the adiabatic double passage, combines the relatively larger corrections available from spatially matched rf gradients [C. Meriles , J. Magn. Reson. 164, 177 (2003)]. with the adjustable corrections available from time-modulated static field gradients [D. Topgaard , Proc. Natl. Acad. Sci. U.S.A. 101, 17576 (2004)]. We explain the origins of these corrections with a theoretical model that simplifies and expedites the design of the pulse waveforms. We also present a generalized method for evaluating and comparing pulses designed for inhomogeneity correction. Experiments validate this method and support simulations that offer new possibilities for significantly enhanced performance in portable environments.</p>
},
	keywords = {design},
	isbn = {0021-9606},
	doi = {Doi 10.1063/1.3243850},
	url = {<Go to ISI>://WOS:000273036300030},
	author = {Franck, J. M. and Demas, V. and Martin, R. W. and Bouchard, L. S. and Pines, A.}
}
