Document Detail


Distal interphalangeal articular cartilage assessment using low-field magnetic resonance imaging.
MedLine Citation:
PMID:  20469547     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The suitability of low-field magnetic resonance (MR) imaging for assessment of articular cartilage has been questioned, based on insufficient image quality. The purposes of this study were to describe the MR anatomy of the normal distal interphalangeal (DIP) cartilage, and to evaluate the sensitivity and accuracy of low-field MR imaging for identification of cartilage erosions that were created ex vivo. Imaging sequences included sagittal and dorsal multiple-oblique T1-weighted gradient-recalled echo (GRE) and sagittal dual echo sequences. In the thickest regions, normal cartilage appeared as a trilaminar structure on high-resolution T1-weighted GRE sequences. All 8 mm large full-thickness erosions were correctly identified (100% sensitivity and accuracy) using T1-weighted GRE sequences. Sensitivity and accuracy ranged from 80% to 100% and 10% to 80%, respectively, for detecting focal full-thickness erosions and from 35% to 80% and 35% to 60%, respectively, for detecting partial thickness erosions, using T1-weighted GRE sequences. Superficial irregularities were not diagnosed using any sequence. Overall, fewer cartilage alterations were detected with sagittal dual echo sequences than with sagittal T1-weighted GRE sequences. The dorsal multiple-oblique plane was useful to detect linear dorsopalmar erosions. A combination of T1-weighted GRE sequences in two planes has potential for identification of severe DIP cartilage erosion in anesthetized horses using low-field MR imaging.
Authors:
Julien Olive
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association     Volume:  51     ISSN:  1058-8183     ISO Abbreviation:  Vet Radiol Ultrasound     Publication Date:    2010 May-Jun
Date Detail:
Created Date:  2010-05-17     Completed Date:  2010-06-08     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9209635     Medline TA:  Vet Radiol Ultrasound     Country:  United States    
Other Details:
Languages:  eng     Pagination:  259-66     Citation Subset:  IM    
Affiliation:
Diagnostic Imaging Department, VetAgroSup-Veterinary Campus, Universit? Lyon II, 1 Avenue Bourgelat, 69280 Marcy l'Etoile, France. julien_olive_veto@hotmail.com
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MeSH Terms
Descriptor/Qualifier:
Animals
Cartilage, Articular / anatomy & histology*,  pathology
Female
Horses / anatomy & histology*
Magnetic Resonance Imaging*
Male
Sensitivity and Specificity
Toe Joint / anatomy & histology*,  pathology

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


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