SPATIALLY-RESOLVED TRANSPORT-PROPERTIES IN RADIALLY COMPRESSED BEAD PACKINGS STUDIES BY PFG NMR

Authors
VANDUSSCHOTEN D TALLAREK U SCHEENEN T NEUE UD VANAS H
Citation
D. Vandusschoten et al., SPATIALLY-RESOLVED TRANSPORT-PROPERTIES IN RADIALLY COMPRESSED BEAD PACKINGS STUDIES BY PFG NMR, Magnetic resonance imaging, 16(5-6), 1998, pp. 703-706
Citations number
8
Categorie Soggetti
Radiology,Nuclear Medicine & Medical Imaging
Journal title
Magnetic resonance imaging → ACNP
ISSN journal
0730725X
Volume
16
Issue
5-6
Year of publication
1998
Pages
703 - 706
Database
ISI
SICI code
0730-725X(1998)16:5-6<703:STIRCB>2.0.ZU;2-U
Abstract
Pulsed field gradient (PFG) multi-echo (ME) and turbo spin-echo (TSE) imaging is used to study dispersive flow in radially compressed chroma tographic columns packed with porous silica beads. By using the pulsed field gradient turbo spin-echo sequence spatially resolved displaceme nt imaging can be accelerated by a factor of 16, The positive effect o f homogeneous radial packing on how velocity and dispersion is demonst rated. Small heterogeneities of only a few percent are shown to cause changes of the dispersion coefficient of up to 50%. (C) 1998 Elsevier Science Inc.