RADIATION SAFETY PASSED EXAM 2
CERTIFICATION ASSESSMENT 2026 VERIFIED
ANSWERS GRADED A+
◉ Which of the following is considered by the EPA to be the second
leading cause of lung cancer in the United States.
Answer: Radon exposure
◉ Which of thefollowing are forms of electromagnetic radiation?
1. Microwaves
2. Visible light
3. X-rays.
Answer: 1, 2, and 3
◉ The amount of energy transferred to electrons by ionizing
radiation is the basis of the concept of.
Answer: Radiation dose
,◉ In the electromagnetic spectrum, higher frequencies are
associated with _____ wavelengths and _____ energies..
Answer: shorter; higher
◉ The ALARA principle can be achieved by:
A. Radiation exposure levels remain low
B. Patients are shielded during exams
C. Technologists work to reduce repeat rates
D. All the above can ensure that the ALARA principle is followed..
Answer: D
◉ As radiologic technologists, we are required to comply with legal
radiation protection responsibilities as well as:.
Answer: The ARRT Code of Ethics
◉ Coherent scattering is most likely to occur ____________, even
though some of this unmodified scattering occurs throughout the
diagnostic range and may result in small amounts of radiographic
fog..
Answer: below 10 keV
,◉ Which of the following is not a type of interaction between x-
radiation and biologic matter?.
Answer: Bremsstrahlung
◉ The symbol Z indicates the:.
Answer: Atomic number of an atom
◉ In photoelectric absorption, in order to dislodge an inner-shell
electron from its atomic orbit, the incoming x-ray photon must be
able to transfer a quantity of energy:.
Answer: As large as or larger than the amount of energy that binds
the electron in its orbit
◉ Which of the following terms refers to the radiation that occurs
when an electron "falls down" from an outer orbit to fill a vacancy in
an inner orbit of the parent atom?.
Answer: Characteristic radiation
◉ Which of the following is not another term for coherent
scattering?.
Answer: Characteristic
◉ Which of the following are by products of photoelectric
absorption?.
, Answer: Photoelectron and characteristic photon
◉ Which two interactions between x-radiation and matter may
result in the production of small-angle scatter?.
Answer: Coherent scattering and Compton scattering
◉ Which of the following interactions results in the conversion of
matter into energy?.
Answer: Annihilation reaction
◉ During the process of coherent scattering, the incident x-ray
photon interacts with a(n):.
Answer: Atom transferring its energy by causing some or all of the
electrons of the atom to vibrate momentarily and radiate energy in
the form of electromagnetic waves
◉ Which of the following results in all-directional scatter?.
Answer: Compton interaction
◉ Annihilation radiation is used in which of the following
modalities?.
Answer: Positron emission tomography (PET)
CERTIFICATION ASSESSMENT 2026 VERIFIED
ANSWERS GRADED A+
◉ Which of the following is considered by the EPA to be the second
leading cause of lung cancer in the United States.
Answer: Radon exposure
◉ Which of thefollowing are forms of electromagnetic radiation?
1. Microwaves
2. Visible light
3. X-rays.
Answer: 1, 2, and 3
◉ The amount of energy transferred to electrons by ionizing
radiation is the basis of the concept of.
Answer: Radiation dose
,◉ In the electromagnetic spectrum, higher frequencies are
associated with _____ wavelengths and _____ energies..
Answer: shorter; higher
◉ The ALARA principle can be achieved by:
A. Radiation exposure levels remain low
B. Patients are shielded during exams
C. Technologists work to reduce repeat rates
D. All the above can ensure that the ALARA principle is followed..
Answer: D
◉ As radiologic technologists, we are required to comply with legal
radiation protection responsibilities as well as:.
Answer: The ARRT Code of Ethics
◉ Coherent scattering is most likely to occur ____________, even
though some of this unmodified scattering occurs throughout the
diagnostic range and may result in small amounts of radiographic
fog..
Answer: below 10 keV
,◉ Which of the following is not a type of interaction between x-
radiation and biologic matter?.
Answer: Bremsstrahlung
◉ The symbol Z indicates the:.
Answer: Atomic number of an atom
◉ In photoelectric absorption, in order to dislodge an inner-shell
electron from its atomic orbit, the incoming x-ray photon must be
able to transfer a quantity of energy:.
Answer: As large as or larger than the amount of energy that binds
the electron in its orbit
◉ Which of the following terms refers to the radiation that occurs
when an electron "falls down" from an outer orbit to fill a vacancy in
an inner orbit of the parent atom?.
Answer: Characteristic radiation
◉ Which of the following is not another term for coherent
scattering?.
Answer: Characteristic
◉ Which of the following are by products of photoelectric
absorption?.
, Answer: Photoelectron and characteristic photon
◉ Which two interactions between x-radiation and matter may
result in the production of small-angle scatter?.
Answer: Coherent scattering and Compton scattering
◉ Which of the following interactions results in the conversion of
matter into energy?.
Answer: Annihilation reaction
◉ During the process of coherent scattering, the incident x-ray
photon interacts with a(n):.
Answer: Atom transferring its energy by causing some or all of the
electrons of the atom to vibrate momentarily and radiate energy in
the form of electromagnetic waves
◉ Which of the following results in all-directional scatter?.
Answer: Compton interaction
◉ Annihilation radiation is used in which of the following
modalities?.
Answer: Positron emission tomography (PET)
