Figure 1.

Dynamic gadolinium-diethylenetriamine pentaacetic acid (Gd-DTPA)-enhanced MRI of the wrist in a patient with psoriatic arthritis. Sequence (a) shows the precontrast image; sequences (b–d) show images acquired after 36, 90, and 180 s, respectively. The region of interest on which the enhancement curve has been calculated is outlined. Gd-DTPA, dynamic gadolinium-diethylenetriamine pentaacetic acid; MRI, magnetic resonance image.