Diagnostic reliability of low-field magnetic resonance imaging (MRI) for the study of nail and distal interphalangeal (DIP) joint in psoriatic arthritis (PSA)

Methods. Twenty-three patients with PsA (9/14 F/M median age 47 yrs). 12 with onychopathy (2/10 F/M. median age 44 yrs) and I I without (7/4 F/M. median age 52 yrs). and 10 control subjects (5/5 F/M. median age 43.2 yrs) were enrolled. MRI of nail and distal phalanx (DP) including examination of DIP joints was carried out. MRI was performed with a Surface coil in a 1.5 T device. For each selected finger. both longitudinal and axial scans were performed. The involvement of nail, DP. and DIP joint was scored.

Objective. To study distal interphalangeal (DIP) joints in patients with psoriatic arthritis (PsA) with or without onychopathy, using magnetic resonance imaging (MRI).