RADIATION SAFETY EXAM QUESTIONS WITH 100% TRUE
CORRECT ANSWERS
what does RSC stand for
Radiation Safety Committee
Radiation Safety Committee :function and what do they do?
a group of individuals who are responsible for writing, editing and approving policies for
the entire hospital or medical center and are responsible for the use of all radioactive
materials under specific license conditions.
what does RSO stand for? and what do they do?
Radiation Safety Officer, an individual responsible for the day-to-day operation of the
radiation safety program. Must have the appropriate qualifications and training
experience.
What type of area is the hot lab?
a controlled area
what is done and stored in the hot lab
where all radio pharmaceuticals are delivered, stored, and prepared. It is considered a
controlled area.
Rules in the hot lab lab? Name some
Wear laboratory coats or other protective clothing at all times in areas where radioactive
materials are used. Wear protective gloves at all times while handling radioactive
materials.Always wear personnel monitoring devices (radiation badge or TLD ring
badge.Monitor hands and clothing for contamination after each procedure or before
leaving the area. Use a syringe shield whenever practical for routine preparation of
patient doses and administration to patients.Do not eat, drink, smoke, or apply
cosmetics in any area where radioactive material is stored or used
What does ALARA stand for?
As Low As Reasonably Achievable (principle in healthcare)
Fume hoods eliminate
hazardous fumes. ensures the removal of undesirable airborne contamination
Ion chambers are mostly operated in __________mode and cant do amplification
current mode
Gm meters are usually in _____ mode and can amplify
pulse
GEIGER-MUELLER Commonly used to survey areas of
contamination
GM meter measures in __________ units
, measures how many counts per minute (cpm)
what can you measure with an ionization meter?
what can you not?
Designed to measure high radiation exposure rates and can detect a large number of
events. • Unable to detect small amounts of activity that are associated with
contamination.
units for ionization meter
Measure in mR/hr or µR/hr Measure large sources of radioactivity, such as a generator
or a patient treated with therapeutic I-131 doses.
WELL COUNTER Type of __________________________ detector
Type of solid scintillation detector (not a gas-filled chamber
for a well counter: maximal amount of activity that can be accurately measured or
counted is _______ uci or less
Due to a high efficiency, the maximal amount of activity that can be accurately
measured (or counted) is about 1 uCi or less
Dose Calibrators are radiation detection devices designed to measure the amount of
radioactivity in what units?
curies or bequerels
what are the action levels for a restricted area for alpha beta and gamma
220/2,200/22,000
what are the action levels for an unrestricted area for alpha beta and gamma
22/220/2,200
what does "CAUTION: RADIATION AREA” sign means? where can it be found?
This sign must be posted in an area in which radiation levels could result in an individual
receiving a dose equivalent in excess of 0.005 rem (0.05 mSv) in 1 hour at 30
centimeters from the radiation source or from any surface that radiation penetrates (just
to notify there is radioactive material present)
what does "CAUTION: HIGH RADIATION AREA” sign means? where can it be found?
this sign must be posted in an area in which radiation levels could result in an individual
receiving a dose equivalent in excess of 0.1 rem (1 mSv) in 1 hour at 30 centimeters
from the radiation source or from any surface that radiation penetrates. • Rarely ever
encountered in Nuclear Medicine
what does “GRAVE DANGER: VERY HIGH RADIATION AREA” means and where can
we find it?
This sign must be posted in an area in which radiation levels could result in an individual
receiving a dose equivalent in excess of 500 rad (5 Gy) in 1 hour at 1 meter from the
radiation source or from any surface that radiation penetrates. • Does not apply to
Nuclear Medicine
Exposure rate surveys: when are they performed?
Should be performed weekly
Contamination surveys (when are they performed?)
everyday
CORRECT ANSWERS
what does RSC stand for
Radiation Safety Committee
Radiation Safety Committee :function and what do they do?
a group of individuals who are responsible for writing, editing and approving policies for
the entire hospital or medical center and are responsible for the use of all radioactive
materials under specific license conditions.
what does RSO stand for? and what do they do?
Radiation Safety Officer, an individual responsible for the day-to-day operation of the
radiation safety program. Must have the appropriate qualifications and training
experience.
What type of area is the hot lab?
a controlled area
what is done and stored in the hot lab
where all radio pharmaceuticals are delivered, stored, and prepared. It is considered a
controlled area.
Rules in the hot lab lab? Name some
Wear laboratory coats or other protective clothing at all times in areas where radioactive
materials are used. Wear protective gloves at all times while handling radioactive
materials.Always wear personnel monitoring devices (radiation badge or TLD ring
badge.Monitor hands and clothing for contamination after each procedure or before
leaving the area. Use a syringe shield whenever practical for routine preparation of
patient doses and administration to patients.Do not eat, drink, smoke, or apply
cosmetics in any area where radioactive material is stored or used
What does ALARA stand for?
As Low As Reasonably Achievable (principle in healthcare)
Fume hoods eliminate
hazardous fumes. ensures the removal of undesirable airborne contamination
Ion chambers are mostly operated in __________mode and cant do amplification
current mode
Gm meters are usually in _____ mode and can amplify
pulse
GEIGER-MUELLER Commonly used to survey areas of
contamination
GM meter measures in __________ units
, measures how many counts per minute (cpm)
what can you measure with an ionization meter?
what can you not?
Designed to measure high radiation exposure rates and can detect a large number of
events. • Unable to detect small amounts of activity that are associated with
contamination.
units for ionization meter
Measure in mR/hr or µR/hr Measure large sources of radioactivity, such as a generator
or a patient treated with therapeutic I-131 doses.
WELL COUNTER Type of __________________________ detector
Type of solid scintillation detector (not a gas-filled chamber
for a well counter: maximal amount of activity that can be accurately measured or
counted is _______ uci or less
Due to a high efficiency, the maximal amount of activity that can be accurately
measured (or counted) is about 1 uCi or less
Dose Calibrators are radiation detection devices designed to measure the amount of
radioactivity in what units?
curies or bequerels
what are the action levels for a restricted area for alpha beta and gamma
220/2,200/22,000
what are the action levels for an unrestricted area for alpha beta and gamma
22/220/2,200
what does "CAUTION: RADIATION AREA” sign means? where can it be found?
This sign must be posted in an area in which radiation levels could result in an individual
receiving a dose equivalent in excess of 0.005 rem (0.05 mSv) in 1 hour at 30
centimeters from the radiation source or from any surface that radiation penetrates (just
to notify there is radioactive material present)
what does "CAUTION: HIGH RADIATION AREA” sign means? where can it be found?
this sign must be posted in an area in which radiation levels could result in an individual
receiving a dose equivalent in excess of 0.1 rem (1 mSv) in 1 hour at 30 centimeters
from the radiation source or from any surface that radiation penetrates. • Rarely ever
encountered in Nuclear Medicine
what does “GRAVE DANGER: VERY HIGH RADIATION AREA” means and where can
we find it?
This sign must be posted in an area in which radiation levels could result in an individual
receiving a dose equivalent in excess of 500 rad (5 Gy) in 1 hour at 1 meter from the
radiation source or from any surface that radiation penetrates. • Does not apply to
Nuclear Medicine
Exposure rate surveys: when are they performed?
Should be performed weekly
Contamination surveys (when are they performed?)
everyday
