Donor and patient red blood cells are typically matched for which antigens when a patient with sickle cell disease is going to be transfused?

A lateral cranium projection obtained with the top of the patient's head tilted away from the IR will demonstrate all the following except

a. the left side greater wing of the sphenoid inferior to the right side greater wing. b. the atlas's vertebral foramen. c. the inferior cranial cortices without superimposition. d. the right EAM inferior to the left EAM.

If patient calls with a billing problem but, in fact, the proper fee was charged, the best approach is to 

A. tell the patient that the bill is correct. B. speak to the physician before responding to the patient. C. explain each individual charge to the patient but tell him the payment is due. D. tell the patient that health care is expensive.