@jessicaop: I have called the scheduling department to inquire about earlier appointments and have been successful. This is different from a waitlist as it's true the imaging department does not keep those types of lists, but you can definitely try calling general scheduling who can put you in touch with radiology to check for cancellations. It might also help if you can be flexible between the Phoenix or Scottsdale campus; additionally, if you need a musculoskelatal eval through orthopedic/sports med referral, it's possible you could have this done at the Tempe location. Let me know if this works for you.