@article {393,
	title = {Effects of diffusion on magnetic resonance imaging of laser-polarized xenon gas},
	journal = {Journal of Chemical Physics},
	volume = {108},
	year = {1998},
	note = {J Chem PhysZh114Times Cited:30Cited References Count:24},
	month = {Apr 15},
	pages = {6233-6239},
	abstract = {<p>Molecular diffusion during the application of magnetic field gradients can distort magnetic resonance images. A systematic characterization of these distortions in one dimension was performed using highly spin-polarized xenon gas. By varying the strength of the applied gradient and the geometric dimension of the sample, the evolution of these image distortions between the regimes of strong and weak diffusion was observed. These results are compared with numerical simulations. By directly measuring the displacement distribution of the polarized xenon atoms, it is shown that in the weak-diffusion regime the image distortions originate from the restricted diffusive motion near the sample boundaries, in agreement with previous theoretical work. Additionally, it is shown that the effects of diffusion can be utilized to enhance the contrast between the boundaries and bulk in the images of polarized gas samples, and thus may be exploited as a means of boundary detection in such systems. (C) 1998 American Institute of Physics. [S0021-9606(98)02915-8].</p>
},
	keywords = {xe-129},
	isbn = {0021-9606},
	doi = {Doi 10.1063/1.476030},
	url = {<Go to ISI>://WOS:000073073700018},
	author = {Song, Y. Q. and Goodson, B. M. and Sheridan, B. and de Swiet, T. M. and Pines, A.}
}
@article {426,
	title = {Enhancement of solution NMR and MRI with laser-polarized xenon},
	journal = {Science},
	volume = {271},
	year = {1996},
	note = {ScienceUc778Times Cited:230Cited References Count:41},
	month = {Mar 29},
	pages = {1848-1851},
	abstract = {<p>Optical pumping with laser light can be used to polarize the nuclear spins of gaseous xenon-129. When hyperpolarized xenon-129 is dissolved in liquids, a time-dependent departure of the proton spin polarization from its thermal equilibrium is observed, The variation of the magnetization is an unexpected manifestation of the nuclear Overhauser effect, a consequence of cross-relaxation between the spins of solution protons and dissolved xenon-129. Time-resolved magnetic resonance images of both nuclei in solution show that the proton magnetization is selectively perturbed in regions containing spin-polarized xenon-129. This effect could find use in nuclear magnetic resonance spectroscopy of surfaces and proteins and in magnetic resonance imaging.</p>
},
	keywords = {resonance},
	isbn = {0036-8075},
	doi = {Doi 10.1126/Science.271.5257.1848},
	url = {<Go to ISI>://WOS:A1996UC77800041},
	author = {Navon, G. and Song, Y. Q. and Room, T. and Appelt, S. and Taylor, R. E. and Pines, A.}
}
