Magnetic resonance arthrography (MRA) is widely used to look at the joints, such as the hip, shoulder or wrist. MRA is similar to magnetic resonance imaging (MRI) but shows better images because a contrast solution called gadolinium is given to swell the joint, outline joint structures and show any soft tissue tears and defects. Magnetic resonance arthrography is a good way to look at swollen joints and can be done for any joint.