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Radiation protection Questions and Answers
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Radiation protection
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Radiation protectionWhich of the following statements is (are) true regarding the control badge that
accompanies each shipment of personnel monitors? - answer It should be stored away
from all radiation sources
The National Council on Radiation Protection and Measurements (NCRP) recommends
an annual occupational effective (stochastic) dose equivalent limit of - answer50 mSv (5
rem)
ESE - answer Thus, the greater the intensity of the initial primary beam, the greater the
ESE will be. Therefore, the chest delivers the lowest ESE (12 to 26 mR); the next is the
skull (105 to 240 mR); then the thoracic spine (290 to 485 mR); and the examination
delivering the greatest ESE is the abdomen (375 to 698 mR)
Gonadal shielding should be provided for male patients in which of the following
examinations? - answer1. Femur
2. Abdomen
3. Pelvis
In 1906, Bergoniénd Tribondeau theorized that undifferentiated cells are highly
radiosensitive. Which of the following is (are) characteristic(s) of undifferentiated cells? -
answer1. Young cells
2. Highly mitotic cells
3. Precursor cells
Which of the following is (are) correct regarding care of protective leaded apparel? -
answer1. Lead aprons should be fluoroscoped yearly to check for cracks.
2. Lead gloves should be fluoroscoped yearly to check for cracks.
3. Lead aprons should be hung on appropriate racks when not in use.
The annual dose limit for the skin, hands, and feet (extremities) is - answer50 rem per
year
Which of the following contributes most to patient dose? - answerThe photoelectric
effect
The rad is the unit of - answerradiation dose
What is the minimum requirement for lead aprons, according to CFR 20? - answer0.25
mm Pb
NCRP recommends - answer0.5 mm Pb equiv. minimum for lead aprons
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