The NCRP recommended monthly equivalent dose limit for a pregnant worker is_______mSv.
What is 0.5 mSv?
100
Name the controlling factors of density:
What is ma and time?
100
Greatest cause of unnecessary radiation to patients is from:
What is repeat exposures?
100
Name the national organization that prepares the standards for radiation dose limits of occupational workers.
What is National Council on Radiation Protection?
200
mAs, kVp and OID do NOT affect radiographic density.
What is FALSE? (they ALL affect radiographic density)
200
Federal regulation for the lead equivalency of aprons that are worn in the radiographic room is__________mm.
What is 0.5mm?
200
If the mAs increases what happens to density?
What is density increases?
200
Reddening of the skin caused by high radiation dose:
What is erythema?
200
A pregnant radiation worker should wear a second personnel monitor, where?
What is waist level?
300
Elongation and foreshortening are examples of size distortion.
What is FALSE? (shape distortion)
300
The NCRP states there is a cause for concern if a pregnant woman receives a dose of_______ to the uterus.
What is 150 mGy-t ?
300
Differences in densities on a radiograph describe:
What is contrast?
300
Federal regulation of the lead equivalency of gloves worn during radiographic procedures is_______mm.
What is 0.25 mm?
300
Patient doses in radiography are usually calculated AS the:
What is entrance skin exposure? (ESE)
400
The primary controlling factor of contrast is kVp , which controls the quantity of x-rays produced at the target.
What is FALSE? kVp which controls the QUALITY of x-rays produced at ANODE
400
Short term effects of radiation can occur within how long?
What is 3 months?
400
The amount of detail or sharpness in a digital image is called:
What is spatial resolution?
400
BONUS: Name three mutations that could occur as a result of radiation to the gonads.
What is spina bifida, cleft palate, and polydactyl?
400
Lead equivalent thickness of a gonadal shield should be_______mm.
What is 0.5 mm?
500
At 2.5 Sv whole body equivalent dose blood changes will be seen.
What is FALSE? 0.25
500
BONUS: Name the embryo-fetus equivalent dose limit for gestation.
What is 0.5 rem?
500
BONUS: The term we use to describe the number of gray shades a digital system can reproduce:
What is dynamic range?
500
BONUS: The EDE limit for whole body dose of occupational radiation exposure for non-pregnant workers older than 18 years of age who are involved in radiation use is______ per year.
What is 5.0 rem?
500
BONUS: Name three things that will decrease the dose to limited operator:
What is :
1. minimize time spent in radiation area,
2.use shielding,
3. increase the distance between the source of radiation and the operator