California Fluoroscopy Test |500
Complete Questions with Answers
Which of the following materials are used in the construction of a
fluoroscopic tabletop?
1. Lead
2. Aluminum
3. Bakelite
4. Carbon fiber - -2, 3, and 4
- Geometric factors in the shape of the image intensification tube
b. Focal-film-distance (FFD)
c. Object-to-image distance (OID)
d. Minification gain - -...
- If the entrance skin dose is measured from the surface of the tabletop, the
x-ray source is located:
a. either over or under the table
b. under the table
c. over the table
d. not enough information provided - -b. Under the table
- The mottle level of an image can be adjusted by:
1. changing mA
2. changing kVp
3. changing the exposure factors
4. increasing the number of available x-ray photons - -All of the above
- Why is it important to coordinate the video signal between the TV camera
and the TV monitor?
a. To amplify the video signal appropriately
b. To avoid unnecessary screen lag in the television picture
c. To avoid unnecessary flicker in the television picture
d. So that no exposure is made between frames - -To avoid unnecessary
flicker in the television picture
- How does the focal spot size of fluoroscopic x-ray tube differ from a
radiographic x-ray tube?
a. Often designed with a smaller focal spot
b. Often designed with a larger focal spot
c. No difference in focal spot size - -Often designed with a smaller focal spot
- The best recorded resolution is obtained with use of:
a. Video tape recording
,b. Spot films using conventional cassettes
c. Spot films using a spot film camera
d. Video disc recording - -Spot films using conventional cassettes
- The total filtration used in fluoroscopic x-ray tubes operating above 125
kVp must be a least:
a. 2.5 mm Al equivalent
b. 0.5 mm Al equivalent
c. 3.0 mm Al equivalent
d. 1.0 mm Al equivalent - -3.0 mm Al equivalent
- Fluoroscopy is defined as a radiological examination utilizing ___ for
observation of the transient mage.
a. phosphorescence
b. luminescence
c. radiation
d. fluorescence - -fluorescence
- The optimum source-to-skin distance is ___ for stationary fluoroscopic
equipment and ___ for mobile fluoroscopy equipment.
a. 30 cm, 45 cm
b. 12 cm, 18 cm
c. 18 cm, 12 cm
d. 45 cm, 30 cm - -45 cm, 30 cm
- When referring to a lens system, a higher 'f-number' will result in less ___
being available to form an image on cine film.
a. Contrast
b. Quantum mottle
c. Resolution
d. Light - -b. Light
- Two minutes of actual fluoroscopic exposure time during a UGI Fluoro
study could deliver a skin entrance exposure to the patient ranging from:
a. 5 - 15 rads
b. Over 15 rads
c. 5 - 10 rads
d. 2 - 5 rads - -5 - 15 rads
- "radiation area" is an area in which there exists radiation levels that could
result in an individual receiving a dose equivalent in excess of ___ in one
hours at 30 cm form the radiation source.
a. 0.1 rem (1 mSv)
b. 1.0 rem (10 mSv)
c. 5 rems (50 mSv)
d. 0.005 rem (0.05 mSv - -0.005 rem (0.05 mSv
, - Why is the dose reading at a single anatomic point not expressive of the
total somatic effect?
a. Use of protective shielding and/or natural shielding
b. X-ray beam is restricted to anatomical area of interest
c. Doses are not uniformly distributed throughout the body
d. All listed answers - -All listed answers
- A dose to the skin is most likely a good indicator of the:
a. Dose to the underlying bone marrow
b. Dose to the lens of the eyes
c. Dose to the underlying gonads
d. Level of dose received by organs near the point of interest - -Level of
dose received by organs near the point of interest
- No individual member of the public may receive ___ in any one hour in an
unrestricted area?
1. 2 rems
2. 2 mrems
3. 0.002 rems
4. 200 rems - -2 and 3
- For the average fluoroscopy exam the ESE is
a. 8 R/min
b. 4 R/min
c. 25 R/hr
d. 40 R/hr - -b. 4 R/min
- Which type of personnel monitoring devices discharges a capacitor when in
the presence of ionizing radiation?
a. Pocket chamber
b. Film badge
c. Audible warning device
d. TLD - -Pocket chamber
- Ionizing radiation when coming in contact with cells can:
a. Kill the cell
b. Pass through a cell without producing any damage
c. Damage the cell, but such damage could be adequately repaired
d. All listed answers - -All listed answers
- What is the primary objective in establishing dose limit values for
occupational exposures?
a. To prevent radiation exposures
b. To identify the area where an adverse effect will occur
c. To reduce occupational exposures
, d. To keep exposure well below a level that would cause an adverse effect
to occur during the lifetime of the radiation worker - -To keep exposure well
below a level that would cause an adverse effect to occur during the lifetime
of the radiation worker
- As shown in animal experiments, deleterious effects to the embryo may be
produced with doses of as little as ___ delivered to the embryo.
a. 10 rads
b. 5 rads
c. 50 rads
d. 30 rads - -10 rads
- GSD ___ a prediction or forecast of adverse effects on any individuals or
their unborn child.
a. is
b. is not
c. can be
d. None of the above - -is not
- What type of personnel monitoring device is used when immediate reading
is desired or needed?
a. TLD
b. Film badge
c. Pocket chamber
d. Audible warning device - -Pocket chamber
- Which radiation monitoring device indicates the intensity of radiation by
the frequency or pitch of sound given off?
a. Film badge
b. Pocket chamber
c. Audible warning device
d. Thermo luminescent dosimeter - -Audible warning device
- When a non-threshold dose-effect relationship occurs, the resulting curve:
a. Intersects the dose coordinate at any other place beside its origin
b. Is "S" shaped
c. Intersects the abscissa at its origin
d. Is linearly shaped - -Intersects the abscissa at its origin
- The actual exposure an individual receives ___ the amount recorded by a
personnel monitoring device.
a. may be many times over
b. has no relationship
c. is always equal to
d. is much less than - -may be many times over
Complete Questions with Answers
Which of the following materials are used in the construction of a
fluoroscopic tabletop?
1. Lead
2. Aluminum
3. Bakelite
4. Carbon fiber - -2, 3, and 4
- Geometric factors in the shape of the image intensification tube
b. Focal-film-distance (FFD)
c. Object-to-image distance (OID)
d. Minification gain - -...
- If the entrance skin dose is measured from the surface of the tabletop, the
x-ray source is located:
a. either over or under the table
b. under the table
c. over the table
d. not enough information provided - -b. Under the table
- The mottle level of an image can be adjusted by:
1. changing mA
2. changing kVp
3. changing the exposure factors
4. increasing the number of available x-ray photons - -All of the above
- Why is it important to coordinate the video signal between the TV camera
and the TV monitor?
a. To amplify the video signal appropriately
b. To avoid unnecessary screen lag in the television picture
c. To avoid unnecessary flicker in the television picture
d. So that no exposure is made between frames - -To avoid unnecessary
flicker in the television picture
- How does the focal spot size of fluoroscopic x-ray tube differ from a
radiographic x-ray tube?
a. Often designed with a smaller focal spot
b. Often designed with a larger focal spot
c. No difference in focal spot size - -Often designed with a smaller focal spot
- The best recorded resolution is obtained with use of:
a. Video tape recording
,b. Spot films using conventional cassettes
c. Spot films using a spot film camera
d. Video disc recording - -Spot films using conventional cassettes
- The total filtration used in fluoroscopic x-ray tubes operating above 125
kVp must be a least:
a. 2.5 mm Al equivalent
b. 0.5 mm Al equivalent
c. 3.0 mm Al equivalent
d. 1.0 mm Al equivalent - -3.0 mm Al equivalent
- Fluoroscopy is defined as a radiological examination utilizing ___ for
observation of the transient mage.
a. phosphorescence
b. luminescence
c. radiation
d. fluorescence - -fluorescence
- The optimum source-to-skin distance is ___ for stationary fluoroscopic
equipment and ___ for mobile fluoroscopy equipment.
a. 30 cm, 45 cm
b. 12 cm, 18 cm
c. 18 cm, 12 cm
d. 45 cm, 30 cm - -45 cm, 30 cm
- When referring to a lens system, a higher 'f-number' will result in less ___
being available to form an image on cine film.
a. Contrast
b. Quantum mottle
c. Resolution
d. Light - -b. Light
- Two minutes of actual fluoroscopic exposure time during a UGI Fluoro
study could deliver a skin entrance exposure to the patient ranging from:
a. 5 - 15 rads
b. Over 15 rads
c. 5 - 10 rads
d. 2 - 5 rads - -5 - 15 rads
- "radiation area" is an area in which there exists radiation levels that could
result in an individual receiving a dose equivalent in excess of ___ in one
hours at 30 cm form the radiation source.
a. 0.1 rem (1 mSv)
b. 1.0 rem (10 mSv)
c. 5 rems (50 mSv)
d. 0.005 rem (0.05 mSv - -0.005 rem (0.05 mSv
, - Why is the dose reading at a single anatomic point not expressive of the
total somatic effect?
a. Use of protective shielding and/or natural shielding
b. X-ray beam is restricted to anatomical area of interest
c. Doses are not uniformly distributed throughout the body
d. All listed answers - -All listed answers
- A dose to the skin is most likely a good indicator of the:
a. Dose to the underlying bone marrow
b. Dose to the lens of the eyes
c. Dose to the underlying gonads
d. Level of dose received by organs near the point of interest - -Level of
dose received by organs near the point of interest
- No individual member of the public may receive ___ in any one hour in an
unrestricted area?
1. 2 rems
2. 2 mrems
3. 0.002 rems
4. 200 rems - -2 and 3
- For the average fluoroscopy exam the ESE is
a. 8 R/min
b. 4 R/min
c. 25 R/hr
d. 40 R/hr - -b. 4 R/min
- Which type of personnel monitoring devices discharges a capacitor when in
the presence of ionizing radiation?
a. Pocket chamber
b. Film badge
c. Audible warning device
d. TLD - -Pocket chamber
- Ionizing radiation when coming in contact with cells can:
a. Kill the cell
b. Pass through a cell without producing any damage
c. Damage the cell, but such damage could be adequately repaired
d. All listed answers - -All listed answers
- What is the primary objective in establishing dose limit values for
occupational exposures?
a. To prevent radiation exposures
b. To identify the area where an adverse effect will occur
c. To reduce occupational exposures
, d. To keep exposure well below a level that would cause an adverse effect
to occur during the lifetime of the radiation worker - -To keep exposure well
below a level that would cause an adverse effect to occur during the lifetime
of the radiation worker
- As shown in animal experiments, deleterious effects to the embryo may be
produced with doses of as little as ___ delivered to the embryo.
a. 10 rads
b. 5 rads
c. 50 rads
d. 30 rads - -10 rads
- GSD ___ a prediction or forecast of adverse effects on any individuals or
their unborn child.
a. is
b. is not
c. can be
d. None of the above - -is not
- What type of personnel monitoring device is used when immediate reading
is desired or needed?
a. TLD
b. Film badge
c. Pocket chamber
d. Audible warning device - -Pocket chamber
- Which radiation monitoring device indicates the intensity of radiation by
the frequency or pitch of sound given off?
a. Film badge
b. Pocket chamber
c. Audible warning device
d. Thermo luminescent dosimeter - -Audible warning device
- When a non-threshold dose-effect relationship occurs, the resulting curve:
a. Intersects the dose coordinate at any other place beside its origin
b. Is "S" shaped
c. Intersects the abscissa at its origin
d. Is linearly shaped - -Intersects the abscissa at its origin
- The actual exposure an individual receives ___ the amount recorded by a
personnel monitoring device.
a. may be many times over
b. has no relationship
c. is always equal to
d. is much less than - -may be many times over
