Figure 4From: Evaluating joint-space narrowing and cartilage loss in rheumatoid arthritis by using MRIJoint-space narrowing (JSN) depiction in proximal interphalangeal (PIP) joint. Coronal, fat-suppressed, T1-weighted gradient-echo image (A) and XR (B) show grade 2 JSN of proximal interphalangeal joint 4 (arrow).Back to article page