NUCLEAR MEDICINE BOARD EXAM 2 LATEST VERSIONS AND STUDY
GUIDE (VERSION A AND B) ACTUAL EXAM QUESTIONS AND CORRECT
DETAILED ANSWERS WITH RATIONALES (VERIFIED ANSWERS) |
ALREADY GRADED A+||COMPLETE STUDY MATERIAL
What is the formula for thyroid uptake %? - ANSWER: Thyroid uptake %= Thyroid
counts-patient background counts(thigh)/ capsule counts- room background counts
X100%
Refers to the fact that different types of radiation produce different biologic
effects.... the ratio of an absorbed dose of xrays or gammma rays to the amount of
any other form of radiation that is needed to produce the same biologic effect. -
ANSWER: relative biologic effectiveness
Formula for relative biologic effectiveness? - ANSWER: RBE= Dose of x-ray or gamma
radiation/ equivalent dose of radiation in question
associated with exposure to low level radiation over a prolonged period of time.
Long term exposure to love level rad can lead to leukemia and other forms of cancer.
- ANSWER: Stochastic Effects
the result of a high dose of radiation over a short period of time. These are directly
proportional to the amount of rad exposure. - ANSWER: Non Stochastic/
Deterministic Effects
As Low As Reasonably Achievable - ANSWER: ALARA
If the distance from a radioactive source is doubled, the radition exposure is _____
of that at the original distance. - ANSWER: 1/4
the amount of radiation it takes to produce 1 electrostatic charge in 1cc of dry air at
standard temperature and pressure. - ANSWER: Roentgen
the unit of measure applied to radiation exposure in humans... calculated by
multiplying the number of rads by the RBE. - ANSWER: REM
____ can be measured in types of matter other than air. - ANSWER: RAD (radiation
absorbed dose)
Member of the general public should be exposed to no greater than _____
millirem(mrem) per year. - ANSWER: 100 mrem
Individuals who are radiation workers can be exposed to a max of _____mrem per
year unless that are minors, in which case the annual max is ____mrem. - ANSWER:
5000mrem, 500mrem
,Female radiation worker who declares pregnancy may only be exposed to ____mrem
throughout her nine month pregnancy. - ANSWER: 500mrem
Maximum permissible dose to the eye is ____mrem per year. - ANSWER:
15,000mrem
Skin and extremities should be exposed to no more than ____mrem per year. -
ANSWER: 50,000mrem
3 events that must be reported to the NRC - ANSWER: 1. administration of
therapeutic radiation doses to the wrong patient
2. an administered dose that exceeds 20% of the total prescribed dose
3.Single therapeutic dose that varies by more than 20% from the written directive or
a weekly therapeutic dose that varies by more than 30% from the written directive.
Each wipe must encompass an area of at least ____ square centimeters. - ANSWER:
100 square centimeters
A restricted area is considered to be contaminated if a wipe test delivers a result
greater than ________DPM/100cm^2 - ANSWER: 20,000DPM/100cm^2 for isotopes
such as Tc99m orTI 201
The threshold for a restricted area is lowered to ____DPM/100cm^2 if the area is
contaminated with a high energy isotope such as I131 or In111 - ANSWER:
2,000DMP/100cm^2
What sign should be posted for areas with a radiation level below 5mR/hr? -
ANSWER: "Caution Radioactive Materials"
What sign should be posted for areas with a radiation level greater than 5mR/hr? -
ANSWER: "Caution Radiation Area"
What sign should be posted for areas with a radiation level that exceeds 100mR/hr?
- ANSWER: "Caution High Radiation Area"
Signs should be posted _____ from the radiation source or radioactive surface. -
ANSWER: 30cm
What kind of label should a package have if it has a surface radiation level less than
0.5mR/hr and a 0 transportation index at 1 meter? - ANSWER: A White I label
What kind of label should a package have if it has a surface radiation level greater
than 0.5mR/hr but less than 50mR/hr and a transport index greater than 0 but less
than 1.0 at 1 meter? - ANSWER: Yellow II
, What kind of label should a package have if it has a surface radiation level greater
than 50mR/hr but less than 200mR/hr and transport indexes greater than 1 but less
than 10 at 1 meter? - ANSWER: Yellow III
What kind of label should a package have it is has a surface radiation level of greater
than 200mR/hr but less than 1000mR/hr and transport indexes greater than 10 at 1
meter? - ANSWER: Yellow III Exclusive Use label
Radioactive waste can legally be decayed in storage if the isotope has a physical half
life of less than ___ days - ANSWER: 65
Radioactive waste must be held in storage for no less than ___ half lives and must
emit no measurable radiation. - ANSWER: 10
Department wipe tests and survey records should be retained for ____ years -
ANSWER: 3
all records of radioactive material transferred from one facility to another, including
flood sources, radioactive markers, and attenuation correction sources records
should be retained for ___ years - ANSWER: 5
All leak tests that have been performed on the inventory of sealed sources records
should be retained for ___ years - ANSWER: 5
All records of I131 bioassays performed on radiation workers should be retained
_____ - ANSWER: Indefinitely
Should be performed on all radiation workers involved in I131 therapeutic
procedures - ANSWER: Bioassay
If a radiation worker has absorbed more than _____ of I-131 in a year, the worker
should be relieved of isotope handling duties for the remainder of the year. -
ANSWER: 3uCi
Type of radiation therapy in which the radioactive source is surgically implanted into
a patient. - ANSWER: Radiation Brachytherapy
Total effective dose equivalent for occupational radiation workers should not exceed
____ per year - ANSWER: 5 rem
Total organ dose equivalent should not exceed ____ rem per year for radiation
workers - ANSWER: 50 rem
Includes exposure to all organs of the body except the lens of the eye for radiation
workers - ANSWER: Total organ dose equivalent
GUIDE (VERSION A AND B) ACTUAL EXAM QUESTIONS AND CORRECT
DETAILED ANSWERS WITH RATIONALES (VERIFIED ANSWERS) |
ALREADY GRADED A+||COMPLETE STUDY MATERIAL
What is the formula for thyroid uptake %? - ANSWER: Thyroid uptake %= Thyroid
counts-patient background counts(thigh)/ capsule counts- room background counts
X100%
Refers to the fact that different types of radiation produce different biologic
effects.... the ratio of an absorbed dose of xrays or gammma rays to the amount of
any other form of radiation that is needed to produce the same biologic effect. -
ANSWER: relative biologic effectiveness
Formula for relative biologic effectiveness? - ANSWER: RBE= Dose of x-ray or gamma
radiation/ equivalent dose of radiation in question
associated with exposure to low level radiation over a prolonged period of time.
Long term exposure to love level rad can lead to leukemia and other forms of cancer.
- ANSWER: Stochastic Effects
the result of a high dose of radiation over a short period of time. These are directly
proportional to the amount of rad exposure. - ANSWER: Non Stochastic/
Deterministic Effects
As Low As Reasonably Achievable - ANSWER: ALARA
If the distance from a radioactive source is doubled, the radition exposure is _____
of that at the original distance. - ANSWER: 1/4
the amount of radiation it takes to produce 1 electrostatic charge in 1cc of dry air at
standard temperature and pressure. - ANSWER: Roentgen
the unit of measure applied to radiation exposure in humans... calculated by
multiplying the number of rads by the RBE. - ANSWER: REM
____ can be measured in types of matter other than air. - ANSWER: RAD (radiation
absorbed dose)
Member of the general public should be exposed to no greater than _____
millirem(mrem) per year. - ANSWER: 100 mrem
Individuals who are radiation workers can be exposed to a max of _____mrem per
year unless that are minors, in which case the annual max is ____mrem. - ANSWER:
5000mrem, 500mrem
,Female radiation worker who declares pregnancy may only be exposed to ____mrem
throughout her nine month pregnancy. - ANSWER: 500mrem
Maximum permissible dose to the eye is ____mrem per year. - ANSWER:
15,000mrem
Skin and extremities should be exposed to no more than ____mrem per year. -
ANSWER: 50,000mrem
3 events that must be reported to the NRC - ANSWER: 1. administration of
therapeutic radiation doses to the wrong patient
2. an administered dose that exceeds 20% of the total prescribed dose
3.Single therapeutic dose that varies by more than 20% from the written directive or
a weekly therapeutic dose that varies by more than 30% from the written directive.
Each wipe must encompass an area of at least ____ square centimeters. - ANSWER:
100 square centimeters
A restricted area is considered to be contaminated if a wipe test delivers a result
greater than ________DPM/100cm^2 - ANSWER: 20,000DPM/100cm^2 for isotopes
such as Tc99m orTI 201
The threshold for a restricted area is lowered to ____DPM/100cm^2 if the area is
contaminated with a high energy isotope such as I131 or In111 - ANSWER:
2,000DMP/100cm^2
What sign should be posted for areas with a radiation level below 5mR/hr? -
ANSWER: "Caution Radioactive Materials"
What sign should be posted for areas with a radiation level greater than 5mR/hr? -
ANSWER: "Caution Radiation Area"
What sign should be posted for areas with a radiation level that exceeds 100mR/hr?
- ANSWER: "Caution High Radiation Area"
Signs should be posted _____ from the radiation source or radioactive surface. -
ANSWER: 30cm
What kind of label should a package have if it has a surface radiation level less than
0.5mR/hr and a 0 transportation index at 1 meter? - ANSWER: A White I label
What kind of label should a package have if it has a surface radiation level greater
than 0.5mR/hr but less than 50mR/hr and a transport index greater than 0 but less
than 1.0 at 1 meter? - ANSWER: Yellow II
, What kind of label should a package have if it has a surface radiation level greater
than 50mR/hr but less than 200mR/hr and transport indexes greater than 1 but less
than 10 at 1 meter? - ANSWER: Yellow III
What kind of label should a package have it is has a surface radiation level of greater
than 200mR/hr but less than 1000mR/hr and transport indexes greater than 10 at 1
meter? - ANSWER: Yellow III Exclusive Use label
Radioactive waste can legally be decayed in storage if the isotope has a physical half
life of less than ___ days - ANSWER: 65
Radioactive waste must be held in storage for no less than ___ half lives and must
emit no measurable radiation. - ANSWER: 10
Department wipe tests and survey records should be retained for ____ years -
ANSWER: 3
all records of radioactive material transferred from one facility to another, including
flood sources, radioactive markers, and attenuation correction sources records
should be retained for ___ years - ANSWER: 5
All leak tests that have been performed on the inventory of sealed sources records
should be retained for ___ years - ANSWER: 5
All records of I131 bioassays performed on radiation workers should be retained
_____ - ANSWER: Indefinitely
Should be performed on all radiation workers involved in I131 therapeutic
procedures - ANSWER: Bioassay
If a radiation worker has absorbed more than _____ of I-131 in a year, the worker
should be relieved of isotope handling duties for the remainder of the year. -
ANSWER: 3uCi
Type of radiation therapy in which the radioactive source is surgically implanted into
a patient. - ANSWER: Radiation Brachytherapy
Total effective dose equivalent for occupational radiation workers should not exceed
____ per year - ANSWER: 5 rem
Total organ dose equivalent should not exceed ____ rem per year for radiation
workers - ANSWER: 50 rem
Includes exposure to all organs of the body except the lens of the eye for radiation
workers - ANSWER: Total organ dose equivalent
