Page | 1
RADIATION PROTECTION ARRT EXAM
2025 BRAND NEW ACTUAL EXAM
WITH ANSWERS.
Which of the following accounts for an xray beam heterogeneity
CHOOSE ALL THAT APPLY
1. incident electrons interacting with several layers of tungsten
target atoms
2. Energy differences amount incident electrons
3.. Electrons moving to fill different shells vacancies - correct
answer -1. incident electrons interacting with several layers of
tungsten target atoms
2. Energy differences amount incident electrons
3.Electrons moving to fill different shells vacancies
Bushong 8th edition page 144-146
The xray photons produced at the tungsten target make up a
heterogeneous beam, a _______. This is accounted for by the
fact that the ______ have differing energies
1. spectrum of photon energies/incident electrons
, Page | 2
2. homogeneous spectrum of photon energies/incident electrons
3. spectrum of photon energies/incident neutrons - correct answer
-1. spectrum of photon energies/incident electrons
Bushong 8th edition page 144-146
Also the incident electrons travel through several layers of
_______, lose energy with each interaction and therefore produce
increasingly ______
1. tungsten target material/stronger photons
2. alloy target material/weaker photons
3. tungsten target material/weaker photons - correct answer -3.
tungsten target material/weaker photons
Bushong 8th edition page 144-146
During ________vacancies may be filled in the K,L, or M shells,
which differ from each other in binding energies and therefore
photons with ______ are emitted
1. photoelectric xray production,varying amounts of energy
2. characteristic xray production,same amounts of energy
, Page | 3
3. characteristic xray production,varying amounts of energy -
correct answer -3. characteristic xray production,varying amounts
of energy
Bushong 8th edition page 144-146
Which of the following factors will affect both the quality and
quantity of the primary beam
CHOOSE ALL THAT APPLY
1. Half value layer HVL
2. Kilovolts Kv
3. Milliamperes mA - correct answer -1. Half value layer HVL
2. Kilovolts Kv
Thompson et al page 405
The principal _______ of the primary beam is kilovoltage, but an
increase in kilovotage will also increase the _____ produced at
the target
1. quantitative factor/number of photons
, Page | 4
2. qualitative factor/number of neurons
3. qualitative factor/number of photons - correct answer -3.
qualitative factor/number of photons
Thompson et al page 405
______ defined as the amount of material necessary to decrease
the intensity of the beam to one half therefore changes both beam
_____ and _____
1.HVL/quality and beam efficiency
2.HVL/quality and beam penetration
3.HVL/quality and beam quantity - correct answer -3.HVL/quality
and beam quantity
Thompson et al page 405
______ is directly proportional to xray intensity which is ______
but is unrelated to the quality of the beam
1.Kilovolts Kv/quantity
2.Half value layer HVL/quantity
RADIATION PROTECTION ARRT EXAM
2025 BRAND NEW ACTUAL EXAM
WITH ANSWERS.
Which of the following accounts for an xray beam heterogeneity
CHOOSE ALL THAT APPLY
1. incident electrons interacting with several layers of tungsten
target atoms
2. Energy differences amount incident electrons
3.. Electrons moving to fill different shells vacancies - correct
answer -1. incident electrons interacting with several layers of
tungsten target atoms
2. Energy differences amount incident electrons
3.Electrons moving to fill different shells vacancies
Bushong 8th edition page 144-146
The xray photons produced at the tungsten target make up a
heterogeneous beam, a _______. This is accounted for by the
fact that the ______ have differing energies
1. spectrum of photon energies/incident electrons
, Page | 2
2. homogeneous spectrum of photon energies/incident electrons
3. spectrum of photon energies/incident neutrons - correct answer
-1. spectrum of photon energies/incident electrons
Bushong 8th edition page 144-146
Also the incident electrons travel through several layers of
_______, lose energy with each interaction and therefore produce
increasingly ______
1. tungsten target material/stronger photons
2. alloy target material/weaker photons
3. tungsten target material/weaker photons - correct answer -3.
tungsten target material/weaker photons
Bushong 8th edition page 144-146
During ________vacancies may be filled in the K,L, or M shells,
which differ from each other in binding energies and therefore
photons with ______ are emitted
1. photoelectric xray production,varying amounts of energy
2. characteristic xray production,same amounts of energy
, Page | 3
3. characteristic xray production,varying amounts of energy -
correct answer -3. characteristic xray production,varying amounts
of energy
Bushong 8th edition page 144-146
Which of the following factors will affect both the quality and
quantity of the primary beam
CHOOSE ALL THAT APPLY
1. Half value layer HVL
2. Kilovolts Kv
3. Milliamperes mA - correct answer -1. Half value layer HVL
2. Kilovolts Kv
Thompson et al page 405
The principal _______ of the primary beam is kilovoltage, but an
increase in kilovotage will also increase the _____ produced at
the target
1. quantitative factor/number of photons
, Page | 4
2. qualitative factor/number of neurons
3. qualitative factor/number of photons - correct answer -3.
qualitative factor/number of photons
Thompson et al page 405
______ defined as the amount of material necessary to decrease
the intensity of the beam to one half therefore changes both beam
_____ and _____
1.HVL/quality and beam efficiency
2.HVL/quality and beam penetration
3.HVL/quality and beam quantity - correct answer -3.HVL/quality
and beam quantity
Thompson et al page 405
______ is directly proportional to xray intensity which is ______
but is unrelated to the quality of the beam
1.Kilovolts Kv/quantity
2.Half value layer HVL/quantity
