Fluid collection within the synovial sheath of the tendon of the flexor hallus longus muscle in the tarsal joint of rats: an anatomic variant detectable with magnetic resonance imaging.
Lab Anim
; 40(1): 58-62, 2006 Jan.
Article
em En
| MEDLINE
| ID: mdl-16460589
ABSTRACT
Magnetic resonance (MR) images of the right tarsal joint of 22 normal male HanWistar rats were acquired using a 4.7 T magnet. An intermediate-high signal area associated with the tendon of the flexor hallus longus muscle was noticed in three rats on T2-weighted images. These areas appeared as an intermediate-high signal on lightly T2-weighted images, but appeared as an iso-signal to muscle structure on proton density weighted images. Histology preparations showed that such areas were caused by a sizable fluid collection within the synovial sheath of the tendon of the flexor hallus longus muscle, with all other joint structures appearing normal. This anatomic variant could be potentially regarded as a lesion on T2-weighted MR images, such as inflamed tissue with oedema, especially when the spatial resolution and/or signal-to-noise ratio are not optimal.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Líquido Sinovial
/
Membrana Sinovial
/
Articulações Tarsianas
/
Tendões
/
Imageamento por Ressonância Magnética
Limite:
Animals
Idioma:
En
Ano de publicação:
2006
Tipo de documento:
Article