Continuous wave MRI diffusion study of water in bentonite clay

被引：13

作者：

Fagan, AJ

Nestle, N

Lurie, DJ ^{[1
]}

机构：

[1] Univ Aberdeen, Dept Biomed Phys & Bioengn, Aberdeen AB25 2ZD, Scotland

[2] Tech Univ Darmstadt, Inst Festkorperphys, D-64289 Darmstadt, Germany

[3] Univ Glasgow, Wellcome Surg Inst, Fac MR 7T, Glasgow G61 1QH, Lanark, Scotland

来源：

MAGNETIC RESONANCE IMAGING | 2005年 / 23卷 / 02期

关键词：

NMR; clay; mineral liner diffusion; CW-MRI;

D O I：

10.1016/j.mri.2004.11.042

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

Three-layered clay minerals such as montmorillonite (bentonite) exhibit very short transverse relaxation times. This is especially true for samples with relatively low water contents in the region of 20% to 30%, which is the water content typically used in environmental technology applications (e.g., as a mineral liner material for landfills). The diffusion of water in samples with such short transverse relaxation times can be measured with NMR by observing the moisture gradients or isotope tracer fronts propagating through appropriately prepared samples by means of continuous wave MRI. The first results from such studies on bentonite clays are presented in this paper. (c) 2005 Elsevier Inc. All rights reserved.

引用

页码：317 / 319

页数：3

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