Table 1 The differential diagnosis using triphasic bone scan
Phase | Malignancy [13] | Osteomyelitis [13] | Stress fracture [14] | IMOS [1], [our cases] |
|---|---|---|---|---|
Phase 1: Vascular phase | Enhanced blood flow | Enhanced blood flow | Relatively poor sensitivity | Absent |
Phase 2: Soft tissue (Blood pool) | Soft-tissue hyperemia | Soft-tissue hyperemia | Lateral/medial blood pool imaging was positive and significantly better than anterior/posterior images | Absent or slightly uptake |
Phase 3: Delayed (bone) | Increased uptake | Increased uptake | Focal increased tracer uptake | Fusiform-shaped intense area of the tracer uptake |