Instruct patient to fast for 4 hours before imaging

Obtain creatinine within 7 days before imaging

Schedule scan 12-24hrs before surgery

Premedicate patient with diphenhydramine 1 hr before imaging

Schedule an additional liver Acquisition Protocol Element 10-15 minutes after contrast injection if the patient has a history of cholangiocarcinoma; note this example would affect both the length of the scheduled time slot and the actual performance with a delayed acquisition

If available run the followup scan on the same device as the original scan.