Original MICA image-reading exercise, unscored. No clinical narrative absent from the source is added.
- Describe visible findings before proposing an interpretation.
- Suggest an interpretation and at least one image limitation.
- Which clinical findings or investigations would complement this observation?
Reveal the explained reading
Muscle oedema and fatty replacement · MRI
- T1 sequence
- Fat and volume
- STIR/fat-suppressed T2
- Water-sensitive signal
- Distribution
- Muscles and symmetry
- Specificity
- Non-specific oedema
Morphological description
STIR hyperintensity suggests increased water; fatty T1 signal and volume loss suggest structural damage.
Causes and diagnostic direction
Inflammatory myopathy, denervation, exercise, trauma and infection can alter muscle signal.
Differential diagnoses
Oedema does not diagnose myositis; distribution, clinical findings and laboratory testing distinguish causes.
Pitfalls and limitations
A single image does not represent all muscles; signal abnormalities and enzymes may be discordant.
Take-home message
Separate potential activity, damage and diagnosis; correlate MRI with clinical and, when indicated, pathological data.
Sources
- MRI and muscle imaging for idiopathic inflammatory myopathies - PMC ↗
- Update on muscle imaging in myositis - PMC ↗
Documentary review: 2026-10-12
Media source & rights
- Author
- Machado, Pedro*; Brady, Stefen*; Hanna, Michael G.
- Original source
- Machado, Pedro*; Brady, Stefen*; Hanna, Michael G., Inclusion_body_myositis_MRI.jpg, CC BY 3.0, Wikimedia Commons; conversion WebP et réduction proportionnelle.
- Licence
- CC BY 3.0
- Changes
- Conversion WebP, redimensionnement proportionnel sans recadrage ni annotations ajoutées; EXIF retiré. Dérivé écran proportionnel ≤1280 px, WebP qualité76 ; vignette ≤320 px qualité72. Source acquise et dérivé initial conservés sans modification ; aucune retouche médicale, aucun recadrage.
- Dimensions
- 960 × 934 px
- Check
- 2026-10-11T20:53:02.631419+00:00