 After negative aspiration, 0.25 - 0.5 cc of Omnipaque 240 contrast media was injected into the facet as an arthrogram to visualize the joint and the capsule. 
After negative aspiration , 0.25 - 0.5 cc of Omnipaque 240 contrast media was injected into the facet as an arthrogram to visualize the joint and the capsule .