California Fluoroscopy Supervisor and Operator Exam
Questions With Complete Solutions
1. All of the following directly influence the table-top exposure
rate except:
a. Filtration
b. kVp
c. target to panel distance
d. none of the above Correct Answers d. none of the above
1. Fluoroscopic equipment with AEC control shall not be
operable at any combination of tube potential and current in
excess of
a. 5 R/min
b. 10 R/min
c. 2.2 R/min
d. None of the above Correct Answers b. 10 R/min
1. levels that an individual could receive in any 1 hour, a dose in
excess of:
a. 5 mRem
b. 50 mRem
c. 500 mRem
d. 100 mRem Correct Answers d. 100 mRem
1. The following facts should be given to women employees
operating x-ray equipment: (1) the 1st 3 months of pregnancy
are the most important; (2) the actual dose received by the fetus
,is less than the dose received by the mother; (3) at the present
occupational dose equivalent limits, the risk to the unborn baby
is considered to be small; (4) there is no need for women to be
concerned about the sterility or loss of the ability to bear
children:
a. 1,3,4
b. 2,4
c. 1,2,3,4
d. 1,2,3 Correct Answers c. 1,2,3,4
1. The genetically significant dose is a factor of which of the
following: (1) examination rate; (2) mean gonadal dose per
examination; (3) number of cells damaged; (4) function of future
children:
a. 1,3,4
b. 2,3
c. 1,2,4
d. 1,2,3 Correct Answers c. 1,2,4
1. The keenest vision in bright light is attained by the:
a. Cones in the center of the retina
b. Rods
c. Aqueous
d. Choroid Correct Answers a. Cones in the center of the retina
1. The roentgen is a unit of:
a. Absorbed dose
,b. Absorbed dose equivalent
c. Exposure
d. Energy equivalent Correct Answers c. Exposure
A "high radiation" area is any area, accessible to individuals, in
which there exists radiation at such levels that an individual
could receive in any one hour a dose to the whole body in excess
of:
a. 5 millirems
b. 10 millirems
c. 50 millirems
d. 100 millirems Correct Answers d. 100 millirems ( 0.1 rems )
A 9" input screen and a 1" output screen increases brightness:
a. 9 times
b. 18 times
c. 40 times
d. 81 times Correct Answers d. 81 times
A certain x-ray tube at some given kVp delivers 3 milliroentgen
per 1 mAs at 40" of distance. At 80 " of distance, the radiation
output from the x-ray beam will be:
a. 16 mR/mAs
b. 8 mR/mAs
c. 2 mR/mAs
d. 1 mR/mAs Correct Answers should be 0.75.... maybe answer
D?
, half distance=4 times the dose
double the distance = 1/4 the dose
A certain x-ray tube, at some given kilovolt peak (kVp), delivers
4 milliroentgens (mR) per one milliampere-second (mAs) at 40
inches distance. At 80 inches distance, the radiation output form
the x-ray tube in mR/mAs) will be:
a. 16
b. 8
c. 2
d. 1 Correct Answers d. 1
D1 = 40", I1 = 4mR/mAs; D2 = 80", I2 = x
4(40^2) = x (80^2)
4 (1600)/6400 = x
1=x
A photocell located between the image intensifier and the
television camera system that is designed to maintain a range of
brightness is a:
a. Photoemitter
b. Vidicon
c. Automatic brightness stabilizer
d. None of the above Correct Answers c. Automatic brightness
stabilizer
A protection curtain should be interposed between the operator
and the patient because scattered radiation exposure at 1 foot
from the patient could be as high as:
Questions With Complete Solutions
1. All of the following directly influence the table-top exposure
rate except:
a. Filtration
b. kVp
c. target to panel distance
d. none of the above Correct Answers d. none of the above
1. Fluoroscopic equipment with AEC control shall not be
operable at any combination of tube potential and current in
excess of
a. 5 R/min
b. 10 R/min
c. 2.2 R/min
d. None of the above Correct Answers b. 10 R/min
1. levels that an individual could receive in any 1 hour, a dose in
excess of:
a. 5 mRem
b. 50 mRem
c. 500 mRem
d. 100 mRem Correct Answers d. 100 mRem
1. The following facts should be given to women employees
operating x-ray equipment: (1) the 1st 3 months of pregnancy
are the most important; (2) the actual dose received by the fetus
,is less than the dose received by the mother; (3) at the present
occupational dose equivalent limits, the risk to the unborn baby
is considered to be small; (4) there is no need for women to be
concerned about the sterility or loss of the ability to bear
children:
a. 1,3,4
b. 2,4
c. 1,2,3,4
d. 1,2,3 Correct Answers c. 1,2,3,4
1. The genetically significant dose is a factor of which of the
following: (1) examination rate; (2) mean gonadal dose per
examination; (3) number of cells damaged; (4) function of future
children:
a. 1,3,4
b. 2,3
c. 1,2,4
d. 1,2,3 Correct Answers c. 1,2,4
1. The keenest vision in bright light is attained by the:
a. Cones in the center of the retina
b. Rods
c. Aqueous
d. Choroid Correct Answers a. Cones in the center of the retina
1. The roentgen is a unit of:
a. Absorbed dose
,b. Absorbed dose equivalent
c. Exposure
d. Energy equivalent Correct Answers c. Exposure
A "high radiation" area is any area, accessible to individuals, in
which there exists radiation at such levels that an individual
could receive in any one hour a dose to the whole body in excess
of:
a. 5 millirems
b. 10 millirems
c. 50 millirems
d. 100 millirems Correct Answers d. 100 millirems ( 0.1 rems )
A 9" input screen and a 1" output screen increases brightness:
a. 9 times
b. 18 times
c. 40 times
d. 81 times Correct Answers d. 81 times
A certain x-ray tube at some given kVp delivers 3 milliroentgen
per 1 mAs at 40" of distance. At 80 " of distance, the radiation
output from the x-ray beam will be:
a. 16 mR/mAs
b. 8 mR/mAs
c. 2 mR/mAs
d. 1 mR/mAs Correct Answers should be 0.75.... maybe answer
D?
, half distance=4 times the dose
double the distance = 1/4 the dose
A certain x-ray tube, at some given kilovolt peak (kVp), delivers
4 milliroentgens (mR) per one milliampere-second (mAs) at 40
inches distance. At 80 inches distance, the radiation output form
the x-ray tube in mR/mAs) will be:
a. 16
b. 8
c. 2
d. 1 Correct Answers d. 1
D1 = 40", I1 = 4mR/mAs; D2 = 80", I2 = x
4(40^2) = x (80^2)
4 (1600)/6400 = x
1=x
A photocell located between the image intensifier and the
television camera system that is designed to maintain a range of
brightness is a:
a. Photoemitter
b. Vidicon
c. Automatic brightness stabilizer
d. None of the above Correct Answers c. Automatic brightness
stabilizer
A protection curtain should be interposed between the operator
and the patient because scattered radiation exposure at 1 foot
from the patient could be as high as:
