Figure 1
From: Identification of tophi in ultrasound imaging based on transfer learning and clinical practice
Imaging features included in the classification criteria: (A) Transverse ultrasonographic image showing double-contour in femoral articular cartilage. The image features hyperechoic enhancement over the surface of the hyaline cartilage; (B) Dual-energy computed tomography scan showing urate deposition at the right first metatarsophalangeal joint; (C) Conventional radiographic image showing signs of erosion in the first metatarsophalangeal joint, as indicated by a cortical break with sclerotic margin and overhanging edge.
