Document Detail

Fluid transport in glass beads phantoms: spatial velocity measurements and confirmation of the stochastic model.
MedLine Citation:
PMID:  9803919     Owner:  NLM     Status:  MEDLINE    
A stochastic model of fluid flow in porous rocks has been previously developed to explain the measured distribution of local velocity. The theoretical predictions of this model agree well with experimental results obtained from the magnetic resonance imaging-based measurements of the spatial variation of velocity of water permeating through Bentheimer and Clashach sandstones. To further verify previous results, we have performed new velocity measurement experiments using an efficient velocity encoded pi-echo planar imaging sequence on glass bead phantoms that exhibit more regular pore size distribution than rocks. The results show that velocity distributions in glass bead phantoms also exhibit Gaussian profiles and the linear relationship between the velocity variance and the mean velocity (the Mansfield-Issa equation).
M Bencsik; B Issa; M A al-Mugheiry; R W Bowtell; P Mansfield
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Magnetic resonance imaging     Volume:  16     ISSN:  0730-725X     ISO Abbreviation:  Magn Reson Imaging     Publication Date:    1998 Jun-Jul
Date Detail:
Created Date:  1999-02-24     Completed Date:  1999-02-24     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8214883     Medline TA:  Magn Reson Imaging     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  605-7     Citation Subset:  IM    
Department of Physics, University of Nottingham, UK.
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MeSH Terms
Echo-Planar Imaging*
Geologic Sediments
Normal Distribution
Particle Size
Phantoms, Imaging*
Stochastic Processes*
Reg. No./Substance:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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