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Diffusion Imaging with Hyperpolarized3He Gas

✍ Scribed by David M. Schmidt; John S. George; Seppo I. Penttila; Arvind Caprihan; Eiichi Fukushima

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
189 KB
Volume
129
Category
Article
ISSN
1090-7807

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✦ Synopsis

We used MRI of hyperpolarized 3He to demonstrate some novel aspects of gas diffusion. Two different techniques were used. First, a slice was burned into a one-dimensional image by inverting the spins in the slice and diffusion was studied by measuring the magnetization as it filled the depleted slice. A diffusion coefficient was determined by the fit of these data. Second, one-dimensional diffusion images were made using a Stejskal-Tanner PGSE method. This was done with and without a temperature gradient present, showing that the effect of temperature can be dynamically monitored by such diffusion images. Copyright 1997 Academic Press. Copyright 1997Academic Press

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