Most outpatients should bring the written request (sometimes called the order or the referral) from their doctor.  (Sometimes these requests are sent ahead to the radiology departemnt, especially for examinations scheduled in advance by appointment.)  If you received any appointment slips or patient preparation instructions, bring these along, too.

It is also advisable to bring a list of your current medications (or you can bring the medications themselves) and any information you may have about any allergies you may have.  (Information on medicines and allergies is not needed for simple x-rays like a chest x-ray or an ankle film, but sometimes patients do not realize they are really scheduled for more complicated studies like a chest CT.  If in doubt, bring the information.)

Bring the most up-to-date insurance card and a drivers licence.