Figure 6From: Monitoring cartilage loss in the hands and wrists in rheumatoid arthritis with magnetic resonance imaging in a multi-center clinical trial: IMPRESS (NCT00425932)Oblique radiographic projection can simulate joint-space narrowing on conventional radiography (XR). (A) Metacarpophalangeal joint (MCP)-1 joint space (short arrow) appears narrowed due to oblique projection on XR. (B) Magnetic resonance imaging of the same MCP joint shows intact articular cartilage and normal joint-space width (long arrow).Back to article page