ARRT REGISTRY EXAM REVIEW
QUESTIONS WITH DETAILED VERIFIED
ANSWERS; ALREADY GRADED A; 2026
"Res ipsa loquitur" means... - CORRECT ANSWER - the thing
speaks for itself
"Respondeat superior" means... - CORRECT ANSWER - let the
master answer
A 15% increase in kVp, keeping all other factors the same, will
result in a _________ of radiographic receptor exposure.
a. doubling
b. halfing - CORRECT ANSWER - a. doubling
a 60 cycle AC generator will produce ___ pulses of electric
current per second.
a. 120
,b. 90
c. 60
d. 30 - CORRECT ANSWER - a. 120
a body at rest or in uniform motion remains in the same state
unless a force is applied describes what?
a. A=F/m
b. for every action there is a reaction
c. Newton's first law of motion
d. Coulomb's Law - CORRECT ANSWER - c. Newton's first law
of motion
A bremsstrahlung interaction occurs between an incident
electron and
a. Outer shell electron
b. Inner shell electron
c. Nucleus of the atom
d. Neutron of the atom - CORRECT ANSWER - c. Nucleus of
the atom
,(A bremsstrahlung interaction is the interaction between an
incident electron and an atom of tungsten with in the anode)
A CT scanogram can be used for which of the following
purposes?
a. bone survey
b. long bone measurement
c. bone age
d. soft tissue neck - CORRECT ANSWER - b. long bone
measurement
a detector element (DEL) size of 200 microns will produce how
much spatial resolution?
a. 2.5 line pairs per millimeter
b. 5 line pairs per millimeter
c. 7.5 line pairs per millimeter
d. 10 line pairs per millimeter - CORRECT ANSWER - a. 2.5 line
pairs per millimeter
(a micron is 1/1,000,000 of a meter. there are 1,000 microns in a
millimeter. Five, 200 micron detectors, could fit in a millimeter.
It takes two detectors to make a line pair, so the spatial
resolution would be 2.5 line pairs per millimeter)
, A flat panel detector is exposed with nothing between the xray
tube and the detector. The pixel readings of 5 different regions
of interest across the detector are averaged and compared.
What quality control test was performed?
a. detectability
b. linearity
c. repeatability
d. uniformity - CORRECT ANSWER - d. uniformity
A form of Acute Radiation Syndrome (ARS) called
Gastrointestinal Syndrome will occur at a dose threshold level
of:
a. 10 Gy
b. .05 Gy
c. 50 Gy
d. 1 Gy - CORRECT ANSWER - a. 10 Gy
(Gastrointestinal Syndrome will only occur at dose threshold
levels of 10 Gy. It is characterized by the destruction of the
intestinal tract, leading to diarrhea and dehydration. Victims of
Gastrointestinal Syndrome are not expected to survive)
QUESTIONS WITH DETAILED VERIFIED
ANSWERS; ALREADY GRADED A; 2026
"Res ipsa loquitur" means... - CORRECT ANSWER - the thing
speaks for itself
"Respondeat superior" means... - CORRECT ANSWER - let the
master answer
A 15% increase in kVp, keeping all other factors the same, will
result in a _________ of radiographic receptor exposure.
a. doubling
b. halfing - CORRECT ANSWER - a. doubling
a 60 cycle AC generator will produce ___ pulses of electric
current per second.
a. 120
,b. 90
c. 60
d. 30 - CORRECT ANSWER - a. 120
a body at rest or in uniform motion remains in the same state
unless a force is applied describes what?
a. A=F/m
b. for every action there is a reaction
c. Newton's first law of motion
d. Coulomb's Law - CORRECT ANSWER - c. Newton's first law
of motion
A bremsstrahlung interaction occurs between an incident
electron and
a. Outer shell electron
b. Inner shell electron
c. Nucleus of the atom
d. Neutron of the atom - CORRECT ANSWER - c. Nucleus of
the atom
,(A bremsstrahlung interaction is the interaction between an
incident electron and an atom of tungsten with in the anode)
A CT scanogram can be used for which of the following
purposes?
a. bone survey
b. long bone measurement
c. bone age
d. soft tissue neck - CORRECT ANSWER - b. long bone
measurement
a detector element (DEL) size of 200 microns will produce how
much spatial resolution?
a. 2.5 line pairs per millimeter
b. 5 line pairs per millimeter
c. 7.5 line pairs per millimeter
d. 10 line pairs per millimeter - CORRECT ANSWER - a. 2.5 line
pairs per millimeter
(a micron is 1/1,000,000 of a meter. there are 1,000 microns in a
millimeter. Five, 200 micron detectors, could fit in a millimeter.
It takes two detectors to make a line pair, so the spatial
resolution would be 2.5 line pairs per millimeter)
, A flat panel detector is exposed with nothing between the xray
tube and the detector. The pixel readings of 5 different regions
of interest across the detector are averaged and compared.
What quality control test was performed?
a. detectability
b. linearity
c. repeatability
d. uniformity - CORRECT ANSWER - d. uniformity
A form of Acute Radiation Syndrome (ARS) called
Gastrointestinal Syndrome will occur at a dose threshold level
of:
a. 10 Gy
b. .05 Gy
c. 50 Gy
d. 1 Gy - CORRECT ANSWER - a. 10 Gy
(Gastrointestinal Syndrome will only occur at dose threshold
levels of 10 Gy. It is characterized by the destruction of the
intestinal tract, leading to diarrhea and dehydration. Victims of
Gastrointestinal Syndrome are not expected to survive)
