Diagnostic Value of DECT Scan Compared to Diagnostic Needle Aspiration

In this study all patients undergo DECT scan to assess the value of DECT scan in diagnosing acute arthritis caused by gout. If the DECT scan demonstrates MSU depositions and the diagnosis of gout was not ascertained prior to DECT scanning by MSU crystals in the synovial fluid, then additional ultrasound guided aspiration will take place, with knowledge of DECT results, followed by repeat microscopy