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what are the guidelines for prescribing dental radiographs to an adult and to a pregnant women?
- adult 12-36 months
- no change for pregnant women same as all other adults
what is the aluminum filtration used above 70 kVp
a rectangular collimator is better than circular why
- restricts beam more than round
- decreases patient exposure
what length of PID is most effective
16 inch rectangular
what are two facts about the thyroid collar
- not used on extraoral films
- may be separate from lead apron
what angle should the operator be standing to the primary beam?
where must the film badge be worn
what is the MPD for a occupationally exposed person
what is the MPD for a occupationally exposed pregnant women?
same as for a nonoccupationally exposed person
what does ALARA stand for?
as low as reasonably achievable
what 4 things do radiographs detect?
- conditions of teeth
- conditions of bone
the benefit of disease detection ____ _____ the risk of the small doses of xradiation
what is something you can instruct the patient to do to avoid gag reflex or help?
lift the arm and leg
if intraoral films are impossible what must you do?
take extraoral films
what is something you can do to avoid a gag reflex before taking the film?
if the patient is blind or visually impaired what must you do?
communicate with clear verbal explanations
developmental disability is a mental or physical disability that occurs before age __
with an edentulous patient the film must extend _/_ inch beyond the ridge
how many feet and at what angle must the operator stand to the primary beam?
what does MPD stand for?
maximum permissible dose
What would you like to do?
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