ECPI STUDY SET EXAM QUESTIONS
AND ANSWERS
What are the two general categories of radiation exposure to people? - Answer-natural
and artificial.
Three sources of natural radiation are what? - Answer-cosmic, earth and internal
What percentage of natural radiation makes up the total amount of radiation exposed to
the public? - Answer-55 percent
What are some examples of sources of natural radiation? - Answer-From the sun and
stars, the ozone, and certain minerals
What percentage makes up artificial radiation for public exposure? - Answer-41 percent
What are some examples of sources of artificial radiation? - Answer-X-rays, tobacco,
TV's, certain smoke alarms
What are the effects of exposure increase every time the individual is exposed to
radiation? - Answer-Long term effects
What regulates the speed of X-ray film? - Answer-The size of the silver halide crystals
is the Halide crystal is larger, the film speed is? - Answer-Faster
What are the 3 basic choices of X-ray film? - Answer-F, E, D Speed.
Which has the highest speed? - Answer-F- Speed
F- speed has the greatest ________ in radiation to the patient. - Answer-reduction
Can film packets contain double films? - Answer-Yes
Is the outer covering water proof? - Answer-Yes
What is the lead layer called in the sequence of the film packet? - Answer-Lead foil
backing
What paper is wrapped around the film, opposite the color of the film? - Answer-Black
paper.
What is the main concern in a dark room? - Answer-Excluding all white light
AND ANSWERS
What are the two general categories of radiation exposure to people? - Answer-natural
and artificial.
Three sources of natural radiation are what? - Answer-cosmic, earth and internal
What percentage of natural radiation makes up the total amount of radiation exposed to
the public? - Answer-55 percent
What are some examples of sources of natural radiation? - Answer-From the sun and
stars, the ozone, and certain minerals
What percentage makes up artificial radiation for public exposure? - Answer-41 percent
What are some examples of sources of artificial radiation? - Answer-X-rays, tobacco,
TV's, certain smoke alarms
What are the effects of exposure increase every time the individual is exposed to
radiation? - Answer-Long term effects
What regulates the speed of X-ray film? - Answer-The size of the silver halide crystals
is the Halide crystal is larger, the film speed is? - Answer-Faster
What are the 3 basic choices of X-ray film? - Answer-F, E, D Speed.
Which has the highest speed? - Answer-F- Speed
F- speed has the greatest ________ in radiation to the patient. - Answer-reduction
Can film packets contain double films? - Answer-Yes
Is the outer covering water proof? - Answer-Yes
What is the lead layer called in the sequence of the film packet? - Answer-Lead foil
backing
What paper is wrapped around the film, opposite the color of the film? - Answer-Black
paper.
What is the main concern in a dark room? - Answer-Excluding all white light
