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Gadolinium chloride as a contrast agent for imaging wood composite components by magnetic resonance

  • Thomas L. Eberhardt , Chi-Leung So , Andrea Protti and Po-Wah So
Published/Copyright: October 23, 2008
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Holzforschung
From the journal Volume 63 Issue 1

Abstract

Although paramagnetic contrast agents have an established track record in medical uses of magnetic resonance imaging (MRI), only recently has a contrast agent been used for enhancing MRI images of solid wood specimens. Expanding on this concept, wood veneers were treated with a gadolinium-based contrast agent and used in a model system comprising three-ply plywood panels fabricated from two untreated veneers and one treated veneer. The limited degree of effect imparted by the contrast agent for specimens in a water-saturated state likely resulted from contrast agent losses due to leaching during the prerequisite water saturation process. Specimens were also analyzed in the air-dry state using a non-conventional MRI sequence. This allowed what appears to be the first reported visualization of earlywood and latewood bands in MR images for air-dry wood specimens. Observation of significant signal dropout for the gadolinium-treated veneer demonstrated the first successful use of a contrast agent to manipulate the signal intensity of a wood component within a composite structure. This technique shows promise for non-destructive two- and three-dimensional assessments of wood component (e.g., veneers, flakes, particles) distributions and orientations in wood composites.

Keywords: earlywood; gadolinium chloride; GdCl3; ion exchange; latewood; magnetic resonance imaging (MRI); plywood
Corresponding author. Southern Research Station, USDA Forest Service, 2500 Shreveport Highway, Pineville, LA 71360, USA Phone: +1-318-473-7274 Fax: +1-318-473-7246
Received: 2008-2-13
Accepted: 2008-8-21
Published Online: 2008-10-23
Published Online: 2008-10-23
Published in Print: 2009-01-01

©2009 by Walter de Gruyter Berlin New York

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https://doi.org/10.1515/HF.2009.024
Keywords for this article
earlywood; gadolinium chloride; GdCl3; ion exchange; latewood; magnetic resonance imaging (MRI); plywood

Articles in the same Issue

  1. Editorial
  2. A report from the 2nd International Cellulose Conference (ICC 2007) in Tokyo
  3. Selected articles from the 2nd International Cellulose Conference (ICC 2007) in Tokyo
  4. Cellulosic aerogels as ultra-lightweight materials. Part 2: Synthesis and properties 2nd ICC 2007, Tokyo, Japan, October 25–29, 2007
  5. Oxidative modifications of cellulose in the periodate system – Reduction and beta-elimination reactions 2nd ICC 2007, Tokyo, Japan, October 25–29, 2007
  6. A comparative study of bamboo Lyocell fiber and other regenerated cellulose fibers 2nd ICC 2007, Tokyo, Japan, October 25–29, 2007
  7. Formation of the crystal structure of Lyocell fiber during drying 2nd ICC 2007, Tokyo, Japan, October 25–29, 2007
  8. Adhesion to wet cellulose – Comparing adhesive layer-by-layer assembly to coating polyelectrolyte complex suspensions 2nd ICC 2007, Tokyo, Japan, October 25–29, 2007
  9. Antimicrobial activity of polyelectrolyte multilayer-treated cellulose films 2nd ICC 2007, Tokyo, Japan, October 25–29, 2007
  10. Cellulose supramolecular structure changes during chemical activation and sulfation 2nd ICC 2007, Tokyo, Japan, October 25–29, 2007
  11. Action of fungal β-glucosidase on the mono-O-methylated p-nitrophenyl β-d-glucopyranoside 2nd ICC 2007, Tokyo, Japan, October 25–29, 2007
  12. Original Papers
  13. Investigation of hydrogen abstraction from methyl glucoside by active oxygen species under oxygen delignification conditions. Part 1: Study on the anomeric position
  14. Hydrolytic stability of water-soluble spruce O-acetyl galactoglucomannans
  15. Cloning and characterization of α-pinene synthase from Chamaecyparis formosensis Matsum
  16. Gadolinium chloride as a contrast agent for imaging wood composite components by magnetic resonance
  17. Changes in wood-water relationship due to heat treatment assessed on micro-samples of three Eucalyptus species
  18. Modification of Fagus sylvatica L. with 1,3-dimethylol-4,5-dihydroxy ethylene urea (DMDHEU). Part 2: Pore size distribution determined by differential scanning calorimetry
  19. Alteration of the pore structure of spruce (Picea abies (L.) Karst.) and maple (Acer pseudoplatanus L.) due to thermal treatment as determined by helium pycnometry and mercury intrusion porosimetry
  20. Data reduction scheme for measuring GIIc of wood in end-notched flexure (ENF) tests
  21. Acoustic wood tomography on trees and the challenge of wood heterogeneity
  22. Horizontal transfer of boron by the Formosan subterranean termite (Coptotermes formosanus Shiraki) after feedingon treated wood
  23. Meeting
  24. Meetings
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