It may feel like we have been talking about a lot on imaging recently, but in emergency medicine, we do a lot of imaging!  More specifically, CTs are a cornerstone in the emergency department and contrast is frequently used.  However, there have been concerns about the use of contrast in higher risk populations which we have also discussed before.  In patients at higher risk, is prophylactic hydration beneficial?  We discuss that on today's podcast with a new randomized control trial.