MRI in inflammatory myopathies |
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Authors: | J Garcia |
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Institution: | (1) Division of Radiodiagnosis and Interventional Radiology, University Hospital, 24, Rue Micheli du Crest, Geneva, Switzerland, CH |
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Abstract: | Inflammatory myopathies encompass a group of acquired muscle disorders caused by infectious agents (bacteria, viruses, fungi
and parasitic agents) or autoimmune processes (polymyositis, dermatomyositis and other types). In suspected infection sonography,
CT and MRI are all able to show edema and fluid collections in soft tissues and muscles; sonography and CT may help guidance
of a needle aspiration to establish a correct diagnosis. By offering better tissue differentiation, MRI appears to be more
efficient than sonography and CT in diagnosing and managing autoimmune myopathies. MRI is indeed very sensitive to the presence
of water and edema, and appears to be a very good indicator for an early diagnosis of diseases. MRI may also help to evaluate
the extent and number of lesions, to guide a biopsy in an area of active disease and finally to follow the evolution under
therapy.
Received: 26 November 1999 Revision requested: 31 January 2000 Revision received: 7 April 2000 Accepted: 3 May 2000 |
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Keywords: | Muscles MRI Myositis Muscles Abscess Dermatomyositis |
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