NMR IMAGING APPLIED TO VARIOUS STUDIES OF POROUS-MEDIA

被引：14

作者：

GUILLOT, G

TROKINER, A

DARRASSE, L

DUPAS, A

FERDOSSI, F

KASSAB, G

HULIN, JP

RIGORD, P

SAINTJALMES, H

机构：

[1] Groupe d'Imagerie par RMN Institut d'Electronique Fondamentale (URA 220 CNRS), Bât. 220, Université Paris-Sud

[2] Laboratoire de Physique et Mecanique de la Matiere Heterogene (URA 857 CNRS) ESPCI, 75231 Paris Cedex 05 F

[3] Magnétech S.A. Parc Club, 91400 Orsay F

[4] Laboratoire Central des Ponts et Chaussées, Orly-Sud

来源：

MAGNETIC RESONANCE IMAGING | 1991年 / 9卷 / 05期

关键词：

MRI; LOW FIELD; POROUS MEDIA; DRYING; TRACER DISPERSION; SOIL FREEZING;

D O I：

10.1016/0730-725X(91)90382-V

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：

We present results of various studies performed in porous media by NMR imaging: discontinuity in the water spatial repartition during drying of a limestone block, drying of cement pastes, progressive melting of a natural clay soil, and quantitative evaluation of dispersion coefficients in glass bead packs. Moreover, the technique has been as well used to obtain the spatial distribution of the relaxation times. The results have been obtained at a magnetic field of 0.1 tesla with samples of approximately 10 cm size. The 3-D spatial distribution has been obtained with a resolution of the order of 1 mm using the standard method of a spin echo in coincidence with a gradient echo for an echo time of 6 to 20 ms and field gradients of 1 G/cm on a whole body access.

引用

页码：821 / 825

页数：5

共 10 条

[1] Darrasse, Saint-Jalmes, Sauzade, Field focused interstitial hyperthermia and Magnetic Resonance (MR) tomography performed with a commercial MR scanner and an invasive grounded probe in phantoms and in rat tissues, Magnetic Resonance Imaging, 3, (1985)
[2] Guillot, Trokiner, Darrasse, Saint-Jalmes, Drying of a porous rock monitored by NMR imaging, J. Phys. D, 22, pp. 1646-1649, (1989)
[3] Schadler, Kast, A complete model of the drying curve for porous bodies—experimental and theoretical studies, Int. J. Heat Mass Transfer, 30, pp. 2031-2044, (1987)
[4] Guillot, Magnetic resonance imaging of liquids in porous media: A comparison to other visualization techniques, Disorder and mixing, pp. 319-326, (1988)
[5] Gaigalas, Van Orden, Robertson, Mareci, Lewis, Application of magnetic resonance imaging to visualization of flow in porous media, Nuclear Technology, 84, pp. 113-118, (1989)
[6] Dullien, Porous media, fluid transport and pore structure, (1979)
[7] Hulin, Plona, Echo tracer dispersion in porous media, Physics of Fluids, 1 A, 8, pp. 1341-1347, (1989)
[8] Rigord, Calvo, Hulin, Transition to irreversibility for the dispersion of a tracer in porous media, Physics of Fluids A: Fluid Dynamics, 1 A, 2, pp. 681-687, (1990)
[9] Leroy, Etude expérimentale de la dispersion d'un traceur dans des milieux stratifiés ou fortement inhomogènes, Thesis, (1987)
[10] Kleinberg, Horsfield, Transverse relaxation processes in porous sedimentary rock, J. Mag. Res., 88, pp. 9-19, (1990)

← 1 →