Main indications: -Diagnosis and follow-up of bone metastases -Primary, tumoral, traumatic, athletic and infectious bone pathology -Paget's disease assessment and surveillance -Search for osteonecrosis -Diagnosis of mechanical or infectious prosthesis loosening -Search for bone cracks, periostitis and stress fracture. -Diagnosis and monitoring of algodystrophy In children: Osteoarthritis, Osteomyelitis, Osteochondritis of the femoral head