Table 3 MR imaging features of osteomyelitis [24] (Fig. 15)
From: Spectrum of imaging findings in osteoarticular tuberculosis
Key feature | Pathological features | T1WI | T2WI | T1 + C |
|---|---|---|---|---|
Bone marrow oedema | Accumulation of pus within medullary cavity with vascular congestion | Low | High | High |
Intra-osseous abscess | Formation of reactive bone and granulation tissue around intramedullary pus | Low | High | Peripheral enhancement |
Subperiosteal abscess | Accumulation of pus beneath elevated periosteum | Low | High | Peripheral enhancement |
Cloaca | A cortical defect that allows pus to drain between bone and soft tissue | Low | High | Low |
Sinus tract | A channel, lined with granulation tissue, that allows pus to drain between bone and the skin surface | Low | High | Peripheral enhancement |
Sequestrum | A separated fragment of necrotic bone that is surrounded by pus, granulation tissue and an involucrum | Low | Low | Peripheral enhancement |