Imagery as Biomarker of Gout

Inclusion Criteria: * Serum urate level ≥ 80 mg/L on inclusion, * No current or previous clinical symptoms of gout (including clinically apparent flares or tophus), * Between 18 and 80 years old, * Able to give informed consent. Exclusion Criteria: * GFR (glomerular filtration rate) \<30 ml / min / 1.73 m² or dialysis, * Serious illness with a poor prognosis of less than 5 years, * Autoimmune inflammatory arthritis, * Change of geographical area within 5 years, * Previous analysis of synovial fluid showing crystals of MSU, * Presence of subcutaneous tophi, * Taking a hypouricaemic treatment (allopurinol, probenecid, benzbromarone, febuxostat, lesinurad), canakinumab, anakinra or colchicine, * Uricemia observed only after an acute decompensation of comorbidity * Pregnant or breastfeeding women