CH. 11,12,14 RADITION PROTECTION
TEST EXAM QUESTIONS AND
ANSWERS
When the time spent in a higher radiation area is reduced or limited, occupational
exposure:
a) is also reduced.
b) is increased slightly.
c) remains the same.
d) is increased considerably. - Answer- a) is also reduced.
Protective eyeglasses with optically clear lenses should contain a minimal lead
equivalent protection of:
a) 0.15 mm.
b) 0.25 mm.
c) 0.35 mm.
d) 0.50 mm - Answer- c) 0.35 mm.
Who should determine the exact shielding requirements for a particular imaging
facility?
a) Administrator of the facility
b) Medical physicist
c) Radiologist
d) Radiographer - Answer- b) Medical physicist
Filters used in radiographic x-ray tubes generally are composed of
a) aluminum
b) copper
c) tin
d) lead - Answer- a) aluminum
The most effective method of protection against radiation exposure to the
radiographer is:
a) Lead apron
b) Lead gloves
c) Lead glasses
d) Distance - Answer- d) Distance
_______________ is the radiation output weighted time that the unit is actually
delivering radiation during the week.
a) Control designation
, b) Occupancy
c) Use factor
d) Workload - Answer- d) Workload
how much protection is provided from a a 100 Kvp x-ray beam when using a 0.5 mm
lead equivalent apron?
a) 40 %
b) 75 %
c) 88 %
d) 99% - Answer- b) 75 %
To ensure that the lifetime risk of occupationally exposed persons remains
acceptable, the lifetime effective dose in mSv should not exceed:
a) the occupationally exposed person's age in years.
b) 5 times the occupationally exposed person's age in years.
c) 10 times the occupationally exposed person's age in years.
d) 20 times the occupationally exposed person's age in years. - Answer- c) 10
times the occupationally exposed person's age in years.
which of the following can be effective means of reducing radiation exposure?
1. barriers
2. distance
3. Time
a) 1 only
b) 2 only
c) 1 and 2 only
d) 1, 2 and 3 - Answer- d) 1, 2 and 3
Which of the following is true concerning holding of patients for radiographic
examinations?
a) May be performed routinely to obtain a diagnostic examination
b) Should be done only when absolutely necessary and then the holding should be
done a competent radiographer so the repeat will not be needed
c) Should be done only when absolutely necessary and then the holding should be
done by a non pregnant member of the patients family
d) may be performed using a students radiographer to hold because students are
not exposed as often as staff radiographer - Answer- c) Should be done only
when absolutely necessary and then the holding should be done by a non pregnant
member of the patients family
The amount of time that the x-rays are being produced and directed toward a
particular wall is o referred to as the :
a) workload
b) use factor
c) occupancy factor
TEST EXAM QUESTIONS AND
ANSWERS
When the time spent in a higher radiation area is reduced or limited, occupational
exposure:
a) is also reduced.
b) is increased slightly.
c) remains the same.
d) is increased considerably. - Answer- a) is also reduced.
Protective eyeglasses with optically clear lenses should contain a minimal lead
equivalent protection of:
a) 0.15 mm.
b) 0.25 mm.
c) 0.35 mm.
d) 0.50 mm - Answer- c) 0.35 mm.
Who should determine the exact shielding requirements for a particular imaging
facility?
a) Administrator of the facility
b) Medical physicist
c) Radiologist
d) Radiographer - Answer- b) Medical physicist
Filters used in radiographic x-ray tubes generally are composed of
a) aluminum
b) copper
c) tin
d) lead - Answer- a) aluminum
The most effective method of protection against radiation exposure to the
radiographer is:
a) Lead apron
b) Lead gloves
c) Lead glasses
d) Distance - Answer- d) Distance
_______________ is the radiation output weighted time that the unit is actually
delivering radiation during the week.
a) Control designation
, b) Occupancy
c) Use factor
d) Workload - Answer- d) Workload
how much protection is provided from a a 100 Kvp x-ray beam when using a 0.5 mm
lead equivalent apron?
a) 40 %
b) 75 %
c) 88 %
d) 99% - Answer- b) 75 %
To ensure that the lifetime risk of occupationally exposed persons remains
acceptable, the lifetime effective dose in mSv should not exceed:
a) the occupationally exposed person's age in years.
b) 5 times the occupationally exposed person's age in years.
c) 10 times the occupationally exposed person's age in years.
d) 20 times the occupationally exposed person's age in years. - Answer- c) 10
times the occupationally exposed person's age in years.
which of the following can be effective means of reducing radiation exposure?
1. barriers
2. distance
3. Time
a) 1 only
b) 2 only
c) 1 and 2 only
d) 1, 2 and 3 - Answer- d) 1, 2 and 3
Which of the following is true concerning holding of patients for radiographic
examinations?
a) May be performed routinely to obtain a diagnostic examination
b) Should be done only when absolutely necessary and then the holding should be
done a competent radiographer so the repeat will not be needed
c) Should be done only when absolutely necessary and then the holding should be
done by a non pregnant member of the patients family
d) may be performed using a students radiographer to hold because students are
not exposed as often as staff radiographer - Answer- c) Should be done only
when absolutely necessary and then the holding should be done by a non pregnant
member of the patients family
The amount of time that the x-rays are being produced and directed toward a
particular wall is o referred to as the :
a) workload
b) use factor
c) occupancy factor
