Radiation Safety

Term
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Which of the following bodies regulates transportation of radiopharmaceuticals?
a) NRC
b) DOT
c) TJC
d) FDA
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Terms in this set (40)
Which of the following bodies regulates transportation of radiopharmaceuticals?
a) NRC
b) DOT
c) TJC
d) FDA
DOT
Which of the following bodies regulates the use of investigational pharmaceuticals?
a) NRC
b) DOT
c) TJC
d) FDA
FDA
In the event of a spill of Tc99m to clothes, one should immediately:
a) enter a shower fully clothed
b) remove and store the clothes until they decay to background
c) wash the clothes in hot water and then survey them to determine remaining activity
d) remove and destroy the clothing
remove and store the clothes until they decay to background
If a radiopharmaceutical is spilled on the floor, the first priority is to:
a) contact the radiation safety officer
b) pour a chelating solution over the area of the spill
c) cover the area with absorbent paper and restrict access around it
d) call the housekeeping department to arrange for cleaning
cover the area with absorbent paper and restrict access around it
The inverse square law, in words, says:
a) if you double the distance from the source of activity, you reduce exposure to 25% of the original intensity
b) if you halve the distance from the source of activity, you decrease exposure to 25% of the original intensity
c) if you halve the distance from the source of activity, you decrease exposure to one-fourth of the original intensity
if you double the distance from the source of activity, you reduce exposure to 25% of the original intensity
What is the best way to decrease the radioactive dose to visitors if a patient is surveyed to emit 3 mR/h at bedside?
a) have the patient wear lead aprons
b) keep the patient well hydrated and encourage frequent voiding
c) have the visitor sit or stand as far as possible form bedside.
d) have the visitor wear lead shielding
Have the visitor sit or stand as far as possible from bedside
which of the following isotopes would be effectively shielded by a plastic syringe?
a) Ga67
b) Sr89
c) Tc99m
d) Kr18m
e) Xe133
Sr89
What is the NRC annual dose limit allowed to the lens of the eye?
a) 1.5 mrem
b) 15 rem
c) 50 rem
d) 5 rem
15 rem
Which of the following should be used when administering an intravenous pharmaceutical to a patient?
a) lead syringe shield
b) leaded eyeglasses
c) gloves
d) syringe shield and eyeclasses
gloves
Which of the following is the most effective means of measuring low levels of removable radiation?
a) by performing an area survey
b) by performing a wipe test
c) with a pocket dosimeter
d) with a TLD
performing a wipe test
What is the dose rate limit at the package of surface of shipment of radioactive material bearing a yellow 3 label? a) 200 mR/h b) 50 mR/h c) 200 rads d) 200 mrem200 mR/hWhich of the following measures absorbed doses? a) mCi b) Becqurel c) graygrayIf the dose rate at 3 m from a radioactive source is 100 mrem/h, what will the dose rate be at 6 m? (a) 25 mR/h (b) 50 mR/h (c) 75 mR/h (d) 12.5 mR/h25 mR/hThe philosophy of the ALARA program is to keep the radiation dose:As low as reasonably achieveableAll of the following are critical factors in keeping radiation exposure to a minimum except: a) time spent near the radioactive source b) geometry of the container holding the source of radiation c) distance from the source of radiation d) shielding of the radioactive sourcegeometry of the container holding the source of radiaitonGaseous radiopharmaceuticals may only be used in rooms that: (a) Have at least one window (b) Contain an oxygen supply (c) Are at a positive pressure compared to surrounding rooms (d) Are at a negative pressure compared to surrounding roomsare at a negative pressure compared to surrounding roomsIf the exposure rate at 4 m from a radioactive source is 5 mR/h, what will the exposure rate at 3m? a) 2.8 mR/h b) 6.5 mR/h c) 7.4 mR/h d) 8.9 mR/h8.9 mR/hA spill of Tc99m increases the exposure rate in a room from 1.7 to 3.15 mR/h. the room is posted with a sign reading "Caution- Radioactive Materials." What should be ideal solution? a) change the sign to one reading " Caution- Radiation Area" b) call the NRC c) decontaminate the floor with water and cleanser d) place absorbent paper over the spill and close the room until the activity has decayedplace absorbent paper over the spill and close the room until the activity has decayedA technologist has 500 mrem registered on his ring badge in 1 month. What should be done to decrease exposure in the future? a) use lead pigs and syringe shields when preparing radiopharmaceuticals b) have another technologist elute the generator c) wear lead apronsuse lead pigs and syringe shields when preparing radiopharmaceuticalsOSHA requires that personnel exposure records be provided to employees: a) monthly b) quarterly c) annually d) biannuallyannuallya room containing a Co57 sheet source is posted with a sign reading " caution- radioactive materials" The exposure rate measured next to the source is 5.2 mR/h. What should be done? a) change the sign to one reading " Caution- radiation area" b) store the source in a lead container c) monitor the length of time a technologist can work near the source d) none of the abovestore the source in a lead containerA technologist discovers that a patient in the room next to a radioiodine therapy will receive 2.5 mrem/h when lying in his bed which is against the shared wall. What should be done? a) move the bed to the other side of the room b) discharge the therapy patient c) discharge the non-therapy patient d) calculate how long visitors to the non- therapy patient can stay e) calculate how long the patient may stay in bed each hour.move the bedWhat is the dose rate limit at the surface of a package bearing a DOT Class 1 White label? a)0.5 mR/h b) 2 mR/h c) 50 mR/h d) 100 mR/h e) 200 mR/h0.5 mR/ha type A package bears a DOT class 2 yellow radioactive label, has a transport index of 0.8 and contains 10 mCi of In111 oxine. What is the exposure rate at 3 ft from the package? a) 0.4 mR/h b) 0.8 mR/h c) mR/h d) 7 mR/h e) Cannot be determined from the information given0.8 mR/hThe doorway to the Nuclear Medicine reception area should be posted with: (a) Caution: Radiation Area (b) Caution: High Radiation Area (c) Grave Danger: Very High Radiation Area (d) Caution: Radioactive Materials (e) None of the aboveNone of the aboveWhich of the following steps would not decrease a technologist's changes of internal exposure to radiation? a) wearing gloves during injection of radiopharmaceuticals b) using tongs to transfer a vial from a lead shield to a dose calibrator. c) working under a fume hood when working with volatile liquids and radioactive gases. d) refraining from smoking and eating in the "hot lab"using tongs to transfer a vial from a lead shield to a dose calibrator.Tools for measuring personal exposure to radiation include all of the following except: a) thermoluminescent dosimeter b) pocket ionization chamber c) film badge d) gm countergm counterWhich of the following must be done during disposal of a carton in which a shipment of I131 was received? a) RSO must be notified b) carton must be stored for ten half - lives before disposal c) radioactive labels must be removed or obliterated d) carton must be discarded with biohazardous waste e) b and c -carton must be stored for ten half-lives before disposal and radioactive labels must be removed or obliterated.radioactive labels must be removed or obliteratedIf the lead HVL for Tc99m is 2.6mm and lead shield containing Tc99m eluate is 13 mm thick, what will the exposure rate be from the shielded vial if the unshielded vial had a rate of 100 mR/h? a) 1.6 mR/h b) 3.1 mR/h c) 6.3 mR/h d) 12.5 mR/h3.1 mR/hReports of area surveys must include all of the following except: (a) A diagram of the areas surveyed (b) Equipment that was used to perform the survey (c) Date performed (d) Initials of the person who performed the survey (e) List of isotopes used in the arealist of isotopes used in the areaa technologist is working in a hot lab where the exposure rate is 20 mR/h. What sign should be on the door? a) caution: radioactive materials b) caution: radiation area c) caution: high radiation area d) grave danger: very high radiation area e) none of the aboveCaution Radiation areaIf a technologist sits 2 ft away from a generator and the dose rate at his chair is 15 mrem/h, what will the dose rate be if he moves his chair 4 ft from the generator? a) 2.5 mrem/h b) 3.75 mrem/h c) 7.5 mrem/h d) 60 mrem/h3.75 mrem/ha misadministration must be: a) reported within a week to the RSO b) reported to the NRC within 15 days after discovery c) reported to the referring physician within 24h d) recorded and the records kept for 5 years e) all of the above except aall of the above except aWhich of the following is not a misadministration? a) When a dose of 400 uCi of Tc99m MAA is given rather than 4 mCi b) when the correct dose of In111 oxine for cisternogram is injected intravenously c) when a patient who should have been injected with 20 mCi of HDP for a bone scan receives a capsule containing 250 uCi of I123 intended for a thyroid patient d) when a patient who should have received 50 mCi of I131 receives 35 mCi instead e) none of the abovenone of the aboveWhich of the following must be kept for 5 years? a) records of misadministration b) records of dose calibrator linearity c) records of doses assayed before administration d) area survey records e) records of instructions to breast-feeding women who received radiopharmaceuticalsrecords of misadministrationRecords of Mo99 breakthrough in Tc99m eluate must be kept for: a) 1 year b) 3 years c) 5 years d) 10 years e) until license expires3 yearsA pregnant technologist receives 350 mrem during her pregnancy according to a film badge worn at waist level. Has the NRC dose limit for the fetus been exceeded? yes or nonoWhat is the best choice for disposal of a vial containing 27 mCi of Tc99m in 2ml of liquid? a) transfer to an authorized recipient b) incinerate c) bury d) store until decayed to background e) release to the atmosphere through evaporationstore until decayed to backgroundwhich of the following materials is sufficient for shielding a therapeutic dose of Y90 ibritumomab tiuxetan? a) lucite b) tungsten c) lead d) none of the aboveAny patient who is treated with Y90 ibritumomab tiuzetan must be hospitalized for at least 24h? true or falsefalse