Fluoro and Mobile Radiology Questions With Complete
Solutions
A 300 rem exposure is equivalent to a:
- 0.3 sievert
- 3 sievert
- 30 sievert
- 300 sievert Correct Answers 3 sievert
A common cause for repeat examinations in DR mobile
radiography is due to
- equipment reliability
- angulation of grids and grid-off.
- variations in image brightness and contrast
- low image contrast. Correct Answers angulation of grids and
grid-off.
A monitoring device which is worn on the outside of protective
apron at the level of the collar is primarily intended to estimate
the exposure received by the:
- Auditory ossicles
- Thyroid gland
- Mandibular Rami
- Partoid gland Correct Answers Thyroid gland
A patient is exposed to 70 rad of 1 MeV neutrons having a
quality factor of 5. This person's dose equivalency is:
- 35 rem
- 70 rad
- 350 rem
- 700 rad Correct Answers 350 rem
,A patient receives an estimated exposure of 4000 millirad of x-
rays during tomographic images of the abdomen. What is this
person's dose equivalent?
- 2.5 millirem
- 2.5 centigray
- 4000 millirem
- 4000 centigray Correct Answers 4000 millirem
A patient recieves a does of 3 rad of fast moving neutrons with a
quality factor of 10. The total dose equivalency of this patient is:
- 30 rem
- 30 sievert
- 300 rem
- 300 sievert Correct Answers 30 rem
A patient recieves a dose of 2 gray of alpha having a quality
factor (QF) of 20. This patient's does equivalency is:
- 10 rem
- 20 sievert
- 40 sievert
- 40 rem Correct Answers 40 sievert
A person is exposed to 100 rad of beta having a quality factor
(QF) of 1. This person's dose equivalency is:
- 100 Curie
- 100 Becquerel
- 100 REM
- 10 Reontgen Correct Answers 100 REM
A tethered DR detector with a portable radiographic unit
,- is wireless with no wire connection.
- is more stable than a wireless DR detector.
- is hard-wired to the portable for power and data transfer.
- automatically sets the exposure factors based upon patient
weight. Correct Answers is hard-wired to the portable for power
and data transfer.
All ambulatory patients should be radiographed in the radiology
department.
- True
- False Correct Answers False
All of the following are true of battery-powered mobile units
EXCEPT:
- Their output is a function of current supplied by the batteries.
- They are quite popular due to their constant and predictable
output.
- Their maneuverability can be a challenge based upon their
weight and size.
- The final kVp is variable as a function of exposure time.
Correct Answers The final kVp is variable as a function of
exposure time.
All of the following are true of capacitor-discharge units
EXCEPT:
- Their output is a function of large capacitors.
- They are quite popular due to their small size and weight as
well as output.
- They function with low-power supply sources.
, - The final kVp is variable as a function of exposure time.
Correct Answers They are quite popular due to their small size
and weight as well as output.
All of the following features are essential to a mobile
radiographic unit EXCEPT
- expandable 6-foot exposure cord.
- automatic exposure control with single field.
- dead-man type exposure switch.
- clear display of exposure factors Correct Answers automatic
exposure control with single field.
An exposure to which of the following radiation will result in
the person receiving the highest dose equivalency?
- 4 gray of x-ray
- 4 gray of beta
- 4 gray of gamma
- 4 gray of alpha Correct Answers 4 gray of alpha
An image intensifier has an input phosphor diameter of 14
inches (35 cm) and an output phosphor diameter of 1 inch (2.5
cm). Its minification gain is:
- 0.072
- 88
- 196
- 1,225 Correct Answers 196
An image intensifier tube is identified by the diameter of its
_____.
- input phosphor
- glass housing
Solutions
A 300 rem exposure is equivalent to a:
- 0.3 sievert
- 3 sievert
- 30 sievert
- 300 sievert Correct Answers 3 sievert
A common cause for repeat examinations in DR mobile
radiography is due to
- equipment reliability
- angulation of grids and grid-off.
- variations in image brightness and contrast
- low image contrast. Correct Answers angulation of grids and
grid-off.
A monitoring device which is worn on the outside of protective
apron at the level of the collar is primarily intended to estimate
the exposure received by the:
- Auditory ossicles
- Thyroid gland
- Mandibular Rami
- Partoid gland Correct Answers Thyroid gland
A patient is exposed to 70 rad of 1 MeV neutrons having a
quality factor of 5. This person's dose equivalency is:
- 35 rem
- 70 rad
- 350 rem
- 700 rad Correct Answers 350 rem
,A patient receives an estimated exposure of 4000 millirad of x-
rays during tomographic images of the abdomen. What is this
person's dose equivalent?
- 2.5 millirem
- 2.5 centigray
- 4000 millirem
- 4000 centigray Correct Answers 4000 millirem
A patient recieves a does of 3 rad of fast moving neutrons with a
quality factor of 10. The total dose equivalency of this patient is:
- 30 rem
- 30 sievert
- 300 rem
- 300 sievert Correct Answers 30 rem
A patient recieves a dose of 2 gray of alpha having a quality
factor (QF) of 20. This patient's does equivalency is:
- 10 rem
- 20 sievert
- 40 sievert
- 40 rem Correct Answers 40 sievert
A person is exposed to 100 rad of beta having a quality factor
(QF) of 1. This person's dose equivalency is:
- 100 Curie
- 100 Becquerel
- 100 REM
- 10 Reontgen Correct Answers 100 REM
A tethered DR detector with a portable radiographic unit
,- is wireless with no wire connection.
- is more stable than a wireless DR detector.
- is hard-wired to the portable for power and data transfer.
- automatically sets the exposure factors based upon patient
weight. Correct Answers is hard-wired to the portable for power
and data transfer.
All ambulatory patients should be radiographed in the radiology
department.
- True
- False Correct Answers False
All of the following are true of battery-powered mobile units
EXCEPT:
- Their output is a function of current supplied by the batteries.
- They are quite popular due to their constant and predictable
output.
- Their maneuverability can be a challenge based upon their
weight and size.
- The final kVp is variable as a function of exposure time.
Correct Answers The final kVp is variable as a function of
exposure time.
All of the following are true of capacitor-discharge units
EXCEPT:
- Their output is a function of large capacitors.
- They are quite popular due to their small size and weight as
well as output.
- They function with low-power supply sources.
, - The final kVp is variable as a function of exposure time.
Correct Answers They are quite popular due to their small size
and weight as well as output.
All of the following features are essential to a mobile
radiographic unit EXCEPT
- expandable 6-foot exposure cord.
- automatic exposure control with single field.
- dead-man type exposure switch.
- clear display of exposure factors Correct Answers automatic
exposure control with single field.
An exposure to which of the following radiation will result in
the person receiving the highest dose equivalency?
- 4 gray of x-ray
- 4 gray of beta
- 4 gray of gamma
- 4 gray of alpha Correct Answers 4 gray of alpha
An image intensifier has an input phosphor diameter of 14
inches (35 cm) and an output phosphor diameter of 1 inch (2.5
cm). Its minification gain is:
- 0.072
- 88
- 196
- 1,225 Correct Answers 196
An image intensifier tube is identified by the diameter of its
_____.
- input phosphor
- glass housing
