DW-MRI disease patterns
| Disease pattern . | Description . |
|---|---|
| Diffuse | Diffuse decreased signal intensity in T1-weighted sequences and increased signal intensity in T2-weighted, STIR, and high b-value DW sequences, with ADC values >600 to 700 μm2/s |
| Micronodular | Widespread nodular areas <5 mm with preserved normal marrow in between |
| Focal | Lesions ≥5 mm with decreased signal in T1-weighted sequences, increased signal in T2-weighted and STIR sequences, hyperintense to background muscle in high b-value images, compatible ADC values (600-1400 μm2/s) |
| Focal on diffuse | Coexistence of focal and DD |
| Disease pattern . | Description . |
|---|---|
| Diffuse | Diffuse decreased signal intensity in T1-weighted sequences and increased signal intensity in T2-weighted, STIR, and high b-value DW sequences, with ADC values >600 to 700 μm2/s |
| Micronodular | Widespread nodular areas <5 mm with preserved normal marrow in between |
| Focal | Lesions ≥5 mm with decreased signal in T1-weighted sequences, increased signal in T2-weighted and STIR sequences, hyperintense to background muscle in high b-value images, compatible ADC values (600-1400 μm2/s) |
| Focal on diffuse | Coexistence of focal and DD |
Adapted from Messiou et al.82
STIR, short tau inversion recovery.