Document Detail

Ligaments and tendons of the ankle. Evaluation with low-field (0.2 T) MR imaging.
MedLine Citation:
PMID:  10335969     Owner:  NLM     Status:  MEDLINE    
PURPOSE: To investigate the value of MR imaging using a low-field imaging unit (0.2 T) for the evaluation of ligaments and tendons of the ankle. MATERIAL AND METHODS: Twelve ankle specimens were studied using low-field MR imaging (0.2 T). The Achilles tendon, the tibialis posterior tendon, and the lateral collateral ligaments were evaluated for the presence of degenerative changes and partial and complete tears. Visibility and overall image quality were analyzed by qualitative evaluation. RESULTS: Low-field MR images of the 24 tendons were interpreted as normal in 11 cases, showing degenerative changes in 9 cases and a partial tear in 1 case. Visualization was regarded as not sufficient for a diagnosis in 3 cases. Of the 36 ligaments, 14 were regarded as normal while degenerative changes were seen in 5 cases and a tear in 2 cases. In 13 cases, no diagnosis could be established, and in 2 cases only a probable diagnosis was established. The best overall quality was obtained with the use of T1 spin-echo (680/20/4) and T2 multi-echo (3000/40/1) images. CONCLUSION: Optimized protocols for examination of the ankle using low-field MR imaging may allow evaluation of the Achilles and tibialis posterior tendons, but these protocols may not be as useful for diagnosing ligamentous changes.
T Rand; J M Ahn; C Muhle; M Garcia; D Resnick
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Acta radiologica (Stockholm, Sweden : 1987)     Volume:  40     ISSN:  0284-1851     ISO Abbreviation:  Acta Radiol     Publication Date:  1999 May 
Date Detail:
Created Date:  1999-06-03     Completed Date:  1999-06-03     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8706123     Medline TA:  Acta Radiol     Country:  DENMARK    
Other Details:
Languages:  eng     Pagination:  303-8     Citation Subset:  IM    
Department of Radiology, Veterans Affairs Medical Center, San Diego, CA, USA.
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MeSH Terms
Achilles Tendon / anatomy & histology
Aged, 80 and over
Ankle Joint / anatomy & histology*
Ligaments, Articular / anatomy & histology*
Magnetic Resonance Imaging*
Middle Aged
Tendons / anatomy & histology*

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