Complex sentence: The type of contrast injected into the joint depends on the subsequent imaging that is planned, for pneumoarthrography, gas is used, for CT or radiographs, a water-soluble radiopaque contrast is utilized, and for MRI, gadolinium based solutions are inject.
Split into simpler sentences: The type of contrast injected into the joint depends on the subsequent imaging that is planned. For pneumoarthrography, gas is used, for CT or radiographs, a water-soluble radiopaque contrast is utilized, and for MRI, gadolinium based solutions are inject.