Table 1

Gout ultrasound elemental lesions

Double contour sign

Hyperechoic soft-tissue areas

Bright dotted foci and hyperechoic stippled aggregates

Snowstorm appearance of synovial fluid

Bone erosions

Hypervascularization: Doppler signal

Tophi, with or without posterior shadow

Soft-tissue oedema

Perez-Ruiz et al. Arthritis Research & Therapy 2009 11:232   doi:10.1186/ar2687