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week 5 radiation protection
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what is the most effective method of reducing a pt's exposure to x-radiation?
fast film
what is the fastest film speed?
how much more exposure does it reduce than e-speed?
f-speed (insight)
20% faster than e-speed
what setting of kVp keeps the pt exposure to a minimum?
70 to 90 kVp
all retakes must be ______
avoided
is proper film handling necessary to produce diagnostic radiographs?
yes
does proper film processing eliminate exposure to x-radiation?
yes
operator protection guidelines = operator must avoid the _______ beam
primary
you should stand 6 feet away and _________ to the primary beam
perpendicular
is it ever ok to hold the film or tubehead for the patient?
no
you should stand behind a __________ ___________ when taking a radiograph
protective barrier
what is leakage radiation?
any radiation emitted from the dental tubehead, except the primary beam
where is the film badge worn?
it should never be worn when?
waist level
when undergoing x-ray exposure
when was the standardized performance of x-ray equipment?
when was the equipment usage and certification rule applied?
1968
1981
what is the MPD?
maximum permissible dose = the dose of radiation the body can endure with little or no injury
how much radiation can an occupational employer recieve/year?
non-occupational and pregnant exposure =
5 rems
0.5 rems
how do you figure out the maximum accumulated dose?
MAD= (N-18) X 5 = rems/yr
how many mrems come from a dental x-ray?
10 mrems
what is ALARA?
as low as reasonably achievable
how can patient education about radiation protection be presented?
informal conversation
printed literature
Author
jackiedh
ID
40281
Card Set
week 5 radiation protection
Description
week 5 radiation protection cont...
Updated
2010-10-06T22:55:14Z
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