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Information for Consumers
Standards for your Protection Against Radiation Hazards: Notice to Employees (pdf) (13K)
Order Form (pdf): Radiation Protection Services Materials(52K)
Ways to reduce your exposure to x-rays:
- A doctor should examine you first, to determine if there is a clinical need for the x-ray. Ask your doctor if the x-ray is necessary.
- Be certain that you or your child's gonadal area receives some type of protective shielding when the gonadal area is being x-rayed unless the shield will interfere with the diagnosis. There is usually some type of leaded shield such as a leaded apron for dental x-rays. For medical x-rays, different types and sizes of leaded shielding (adult, child) should be used to protect the gonads if the area being x-rayed is near your gonads.
- If you change doctors, ask that your old x-rays be sent to your new doctor.
- If you are referred to another doctor, make sure that any x-rays already taken for your current problem are sent to the new doctor.
- Ask your dentist if they use "E", "F", or "D" speed x-ray film. Using "E" speed x-ray film results in approximately 50% lower x-ray exposure to the patient compared to "D" speed x-ray film, and using the "F" speed film results in a further reduction of dose; i.e., 20% less patient exposure than E speed X-ray film. Diagnostic results are equal if proper film processing is maintained.
Examples: (exposure averages measured at skin entrance in milliroentgen (mR) for a 70 kVp machine)
- One dental intra-oral bitewing:
- "D" speed film = 240 - 350 mR
- "E" speed film = 120 - 170 mR
- "F" speed film = 96 - 136 mR
- Full mouth series (18 films):
- "D" speed film = 6300 mR
- "E" speed film = 3060 mR
- "F" speed film = 2448 mR
- Panographic full mouth exposure = approximately 600-800 mR
- ( depending on the speed of the film / screen system )
- Medical chest x-ray = 4 to 18 mR
- ( depending on the speed of the film / screen combination used )
As an agency, we strive to keep radiation exposure as low as reasonably possible to stay within the boundaries of the ALARA (as low as reasonably achievable) standard. As a general statement, less is better.
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