Dental radiation exposure to the patient can be reduced by each of the following except one. Which one is the exception?

A) Using the fastest speed film currently available
B) Prescribing radiographs based on evidence-based selection criteria
C) Holding the image receptor in the patient's mouth
D) Restricting the size and shape of the x-ray beam

C
Explanation: A) The radiographer must never hold the image receptor in the patient's mouth. A guardian or caregiver may assist if necessary but must be protected with lead/lead-equivalent barriers. Using an assistant will have no effect on reducing the radiation dose to the patient.
B) The radiographer must never hold the image receptor in the patient's mouth. A guardian or caregiver may assist if necessary but must be protected with lead/lead-equivalent barriers. Using an assistant will have no effect on reducing the radiation dose to the patient.
C) The radiographer must never hold the image receptor in the patient's mouth. A guardian or caregiver may assist if necessary but must be protected with lead/lead-equivalent barriers. Using an assistant will have no effect on reducing the radiation dose to the patient.
D) The radiographer must never hold the image receptor in the patient's mouth. A guardian or caregiver may assist if necessary but must be protected with lead/lead-equivalent barriers. Using an assistant will have no effect on reducing the radiation dose to the patient.