Document Detail

Parameter maps of 1H residual dipolar couplings in tendon under mechanical load.
MedLine Citation:
PMID:  14568513     Owner:  NLM     Status:  MEDLINE    
Proton multipolar spin states associated with dipolar encoded longitudinal magnetization (DELM) and double-quantum (DQ) coherences of bound water are investigated for bovine and sheep Achilles tendon under mechanical load. DELM decay curves and DQ buildup and decay curves reveal changes of the 1H residual dipolar couplings for tendon at rest and under local compression forces. The multipolar spin states are used to design dipolar contrast filters for NMR 1H images of heterogeneous tendon. Heterogeneities in tendon samples were artificially generated by local compression parallel and perpendicular to the tendon plug axis. Quotient images obtained from DQ-filtered images by matched and mismatched excitation/reconversion periods are encoded only by the residual dipolar couplings. Semi-quantitative parameter maps of the residual dipolar couplings of bound water were obtained from these quotient images using a reference elastomer sample. This method can be used to quantify NMR imaging of injured ordered tissues.
R Fechete; D E Demco; B Blümich
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Publication Detail:
Type:  Comparative Study; Evaluation Studies; In Vitro; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of magnetic resonance (San Diego, Calif. : 1997)     Volume:  165     ISSN:  1090-7807     ISO Abbreviation:  J. Magn. Reson.     Publication Date:  2003 Nov 
Date Detail:
Created Date:  2003-10-21     Completed Date:  2004-01-20     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9707935     Medline TA:  J Magn Reson     Country:  United States    
Other Details:
Languages:  eng     Pagination:  9-17     Citation Subset:  IM    
Institut für Technische Chemie und Makromolekulare Chemie, Rheinisch-Westfälische Technische Hochschule, Worringerweg 1, D-52056, Aachen, Germany.
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MeSH Terms
Achilles Tendon / chemistry*,  physiology*
Collagen / chemistry*
Compressive Strength
Culture Techniques
Magnetic Resonance Spectroscopy / methods*
Mechanotransduction, Cellular / physiology*
Spin Labels
Stress, Mechanical
Water / chemistry*
Weight-Bearing / physiology*
Reg. No./Substance:
0/Protons; 0/Spin Labels; 7732-18-5/Water; 9007-34-5/Collagen

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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