1|Page
LMRT ARRT EXAM 2025 – LIMITED SCOPE OF
PRACTICE RADIOGRAPHY TEST PREP
QUESTIONS WITH VERIFIED ANSWERS
Which of the following changes will decrease patient dose -correct-answer-High
kVp
A pregnant radiation workers monthly equivalent dose limit is -correct-answer-0.5
mSv
Spatial resolution is the new digital term used to describe the ______ of the
structures recorded in the image, generally speaking it simply means to the
amount of DETAIL seen on the visible image -correct-answer-Sharpness
X-ray tubes rotate at a standard speed of about ______ during exposure -correct-
answer-3600 rpm
Most X-ray tubes in use today have high speed rotation at -correct-answer-10,000
rpm
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The __________ is used to rotate the anode -correct-answer-Electromagnetic
induction motor
The process of changing Alternating Current (AC) into Direct Current (DC) -correct-
answer-Rectification
Above 70 kVp, about 15% of the beam is? -correct-answer-Characteristic
The German word that means braking and slowing? -correct-answer-
Bremsstrahlung
Every x-ray exposure will contain photons produced from bremsstrahlung
interactions
Below 70 kVp, about what percentage is the beam is brems? -correct-answer-
100%
, 3|Page
Every x-ray exposure will contain photons produced from bremsstrahlung
interactions
Above 70 kVp, about what percentage is the beam is brems? -correct-answer-85%
For Characteristic radiation to be created Above 70 kVp, about what percentage of
the beam is characteristic? -correct-answer-15%
Created when an incoming electron interacts with the k-shell electron and knocks
it out of its orbit. When the electron void is filled with an outer shell electron an x-
ray photon is created
this is? -correct-answer-Characteristic radiation
What is unsharpness? (Geometric blur or focal spot blur) -correct-answer-
Penumbra
Chicago 1920 worlds largest and oldest professional radiation organization -
correct-answer-ASRT
LMRT ARRT EXAM 2025 – LIMITED SCOPE OF
PRACTICE RADIOGRAPHY TEST PREP
QUESTIONS WITH VERIFIED ANSWERS
Which of the following changes will decrease patient dose -correct-answer-High
kVp
A pregnant radiation workers monthly equivalent dose limit is -correct-answer-0.5
mSv
Spatial resolution is the new digital term used to describe the ______ of the
structures recorded in the image, generally speaking it simply means to the
amount of DETAIL seen on the visible image -correct-answer-Sharpness
X-ray tubes rotate at a standard speed of about ______ during exposure -correct-
answer-3600 rpm
Most X-ray tubes in use today have high speed rotation at -correct-answer-10,000
rpm
,2|Page
The __________ is used to rotate the anode -correct-answer-Electromagnetic
induction motor
The process of changing Alternating Current (AC) into Direct Current (DC) -correct-
answer-Rectification
Above 70 kVp, about 15% of the beam is? -correct-answer-Characteristic
The German word that means braking and slowing? -correct-answer-
Bremsstrahlung
Every x-ray exposure will contain photons produced from bremsstrahlung
interactions
Below 70 kVp, about what percentage is the beam is brems? -correct-answer-
100%
, 3|Page
Every x-ray exposure will contain photons produced from bremsstrahlung
interactions
Above 70 kVp, about what percentage is the beam is brems? -correct-answer-85%
For Characteristic radiation to be created Above 70 kVp, about what percentage of
the beam is characteristic? -correct-answer-15%
Created when an incoming electron interacts with the k-shell electron and knocks
it out of its orbit. When the electron void is filled with an outer shell electron an x-
ray photon is created
this is? -correct-answer-Characteristic radiation
What is unsharpness? (Geometric blur or focal spot blur) -correct-answer-
Penumbra
Chicago 1920 worlds largest and oldest professional radiation organization -
correct-answer-ASRT
