Gadolinium chloride as a contrast agent for imaging wood composite components by magnetic resonance
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        Thomas L. Eberhardt
        
 , Chi-Leung So , Andrea Protti and Po-Wah So 
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.
©2009 by Walter de Gruyter Berlin New York
Articles in the same Issue
- Editorial
 - A report from the 2nd International Cellulose Conference (ICC 2007) in Tokyo
 - Selected articles from the 2nd International Cellulose Conference (ICC 2007) in Tokyo
 - Cellulosic aerogels as ultra-lightweight materials. Part 2: Synthesis and properties 2nd ICC 2007, Tokyo, Japan, October 25–29, 2007
 - Oxidative modifications of cellulose in the periodate system – Reduction and beta-elimination reactions 2nd ICC 2007, Tokyo, Japan, October 25–29, 2007
 - A comparative study of bamboo Lyocell fiber and other regenerated cellulose fibers 2nd ICC 2007, Tokyo, Japan, October 25–29, 2007
 - Formation of the crystal structure of Lyocell fiber during drying 2nd ICC 2007, Tokyo, Japan, October 25–29, 2007
 - Adhesion to wet cellulose – Comparing adhesive layer-by-layer assembly to coating polyelectrolyte complex suspensions 2nd ICC 2007, Tokyo, Japan, October 25–29, 2007
 - Antimicrobial activity of polyelectrolyte multilayer-treated cellulose films 2nd ICC 2007, Tokyo, Japan, October 25–29, 2007
 - Cellulose supramolecular structure changes during chemical activation and sulfation 2nd ICC 2007, Tokyo, Japan, October 25–29, 2007
 - Action of fungal β-glucosidase on the mono-O-methylated p-nitrophenyl β-d-glucopyranoside 2nd ICC 2007, Tokyo, Japan, October 25–29, 2007
 - Original Papers
 - Investigation of hydrogen abstraction from methyl glucoside by active oxygen species under oxygen delignification conditions. Part 1: Study on the anomeric position
 - Hydrolytic stability of water-soluble spruce O-acetyl galactoglucomannans
 - Cloning and characterization of α-pinene synthase from Chamaecyparis formosensis Matsum
 - Gadolinium chloride as a contrast agent for imaging wood composite components by magnetic resonance
 - Changes in wood-water relationship due to heat treatment assessed on micro-samples of three Eucalyptus species
 - 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
 - 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
 - Data reduction scheme for measuring GIIc of wood in end-notched flexure (ENF) tests
 - Acoustic wood tomography on trees and the challenge of wood heterogeneity
 - Horizontal transfer of boron by the Formosan subterranean termite (Coptotermes formosanus Shiraki) after feedingon treated wood
 - Meeting
 - Meetings
 
Articles in the same Issue
- Editorial
 - A report from the 2nd International Cellulose Conference (ICC 2007) in Tokyo
 - Selected articles from the 2nd International Cellulose Conference (ICC 2007) in Tokyo
 - Cellulosic aerogels as ultra-lightweight materials. Part 2: Synthesis and properties 2nd ICC 2007, Tokyo, Japan, October 25–29, 2007
 - Oxidative modifications of cellulose in the periodate system – Reduction and beta-elimination reactions 2nd ICC 2007, Tokyo, Japan, October 25–29, 2007
 - A comparative study of bamboo Lyocell fiber and other regenerated cellulose fibers 2nd ICC 2007, Tokyo, Japan, October 25–29, 2007
 - Formation of the crystal structure of Lyocell fiber during drying 2nd ICC 2007, Tokyo, Japan, October 25–29, 2007
 - Adhesion to wet cellulose – Comparing adhesive layer-by-layer assembly to coating polyelectrolyte complex suspensions 2nd ICC 2007, Tokyo, Japan, October 25–29, 2007
 - Antimicrobial activity of polyelectrolyte multilayer-treated cellulose films 2nd ICC 2007, Tokyo, Japan, October 25–29, 2007
 - Cellulose supramolecular structure changes during chemical activation and sulfation 2nd ICC 2007, Tokyo, Japan, October 25–29, 2007
 - Action of fungal β-glucosidase on the mono-O-methylated p-nitrophenyl β-d-glucopyranoside 2nd ICC 2007, Tokyo, Japan, October 25–29, 2007
 - Original Papers
 - Investigation of hydrogen abstraction from methyl glucoside by active oxygen species under oxygen delignification conditions. Part 1: Study on the anomeric position
 - Hydrolytic stability of water-soluble spruce O-acetyl galactoglucomannans
 - Cloning and characterization of α-pinene synthase from Chamaecyparis formosensis Matsum
 - Gadolinium chloride as a contrast agent for imaging wood composite components by magnetic resonance
 - Changes in wood-water relationship due to heat treatment assessed on micro-samples of three Eucalyptus species
 - 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
 - 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
 - Data reduction scheme for measuring GIIc of wood in end-notched flexure (ENF) tests
 - Acoustic wood tomography on trees and the challenge of wood heterogeneity
 - Horizontal transfer of boron by the Formosan subterranean termite (Coptotermes formosanus Shiraki) after feedingon treated wood
 - Meeting
 - Meetings