ARRT REGISTRY PRACTICE TEST #1
EXAM WITH CORRECT ANSWERS 2025
All of the following EXCEPT will result in an increase in AEC response
a. decreasing the
time.
kVp
b. Increasing the focal spot
c. increasing the part
size
thickness
d. increasing the SID - correct answers - b. increasing the focal
spot size
Increasing the focal spot size does not change the AEC response time It
affects resolution.
spatial the Decreasing the kVp increases the exposure time
because more
photons are absorbed, resulting in fewer reaching the cell(s). The same
is true for part thickness. Increasing the SID results in a longer exposure
increasing
time
of because
beam divergence and the decrease in the number of photons reaching
the cell(s).
Of the following, the greatest attenuator of x-
rays is:
a.
air
b.
c.
bone
muscle
d. fat - correct answers - b.
bone
Air allows for the greatest transmission of x-rays. The probability of bone and
soft tissue
(muscle, fat) attenuating x-rays via Compton interactions is roughly the
same. However,
since bone has a higher effective atomic number than soft tissue, bone
attenuates more
The sinus(es) sit(s) directly beneath the sella
x-rays via photoelectric
turcica.
a.
interactions.
b.
ethmoidal
frontal
c.
d. sphenoidal - correct answers - d.
maxillary
sphenoidal
The sphenoidal sinuses are usually paired (2) and are in the body of the
sphenoid
The sinusesbone.
lie below the sella turcica and extend between the posterior
cells and the
ethmoidal air dorsal
sellae.
The vein is BEST suited for
venipuncture.
a.
b.
basilic
popliteal
c.
d. right internal jugular - correct answers - a.
femoral
basilic
,The basilica and cephalic veins are the 2 most common sites of
venipuncture.
popliteal The
and femoral veins are in the lower extremities, which are harder to
access only
should and be used in cases of emergency. The right internal jugular
vein is more
commonly used for central venous access and is not a common site for
venipuncture.
Primary radiation barriers must be AT LEAST feet
a.
high.
5
b.
6
c.
7
d. 8 - correct answers -
c. 7
Primary protective barriers are required to be 7 feet high from
the door.
The sphincter prevents reflux of stomach contents into the
a.
esophagus.
pyloric
b.
c.
cardiac
ileocecal
d. duodenal - correct answers - b.
cardiac
The cardiac sphincter is located at the esophagogastric junction.
When working
properly, it prevents back flow of stomach contents into the
esophagus.
The AEC controls which of the following exposure
variables?
a.
b. focal spot size - correct answers - c.
kVp
seconds
The AEC device is designed to control the time of exposure. The
remaining
factors aretechnical
chosen by the
radiographer.
The receives electrons immediately after they are read out from
an imaging
detecto
r.
a.
b. helium neon
transformer
laser
c. liquid crystal
d. analog-to-digital converter - correct answers - d. analog-to-digital
display
converter
Electrons are analog data. Once they leave the detector, they are sent to the
analog-to-
digital converter for sampling and quantization. Hence, the image is
digital
converted into a
image.
An image that has many shades of gray with few differences among them is
defined as
exhibitin
a. high spatial
g:
resolution
b. low
c. high dynamic
contrast
range
, d. low bit depth - correct answers - b. low
contrast
Low-contrast images consist of many gray shades with very little differences
among the
shades. These images are also referred to as exhibiting long-scale
contrast. Spatial
resolution deals with image sharpness and dynamic range is the imaging
range of response to exposures. Bit depth has to do with the number of
detector's
gray ashades
that system can yield. A low bit depth system would actually result in an
image that
displays few shades of gray. In other words, the image would appear more
black and
whit
e.
Which of the following structures is located in the
mediastinum?
a. right middle lobe and esophagus
b. left upper lobe and heart
c. aorta and thyroid
d. trachea and thymus - correct answers - d. trachea and
Structures
thymus located in the mediastinum are the heart, great vessels, trachea,
thymus, lymphatics, nerves, fibrous tissue,
esophagus,
and fat.
A terminally ill patient has asked the doctor about possible volunteer
opportunities
hospital. in thethat if she can volunteer in the hospital, she might be
She says
ablelife
her to extend
a bit longer from doing good deeds. This represents the stage of
grief for
the
a.
patient.
bargaining
b.
c.
anger
denial
d. depression - correct answers - a.
bargaining
The bargaining stage focuses on the hope the patient has to extend her life.
Anger once
occur can the patient realizes her life is being interrupted by the illness.
Denial can
include rejecting information and preferring to be left alone. Depression
affects the
patient's mood or behavior regarding the illness, and can cause despair and
mourning.
Which of the following are facial
bones?
a. nasal, lacrimal, vomer, and
b. maxillary, zygoma, palatine, and
mandible
parietal
c. vomer, zygoma, sphenoid, and
d. frontal, ethmoid, vomer, and mandible - correct answers - a. nasal,
lacrimal
lacrimal, vomer,
and
mandible
The facial bones include nasal (2), lacrimal (2), maxillary (2), zygoma
(2), palatinenasal conchae (2), and
(2),inferior
mandible.
Which of the following statements is TRUE regarding standard
precautions for
venipunctur
a. standard precautions are not necessary for simple
e?
needle sticks
EXAM WITH CORRECT ANSWERS 2025
All of the following EXCEPT will result in an increase in AEC response
a. decreasing the
time.
kVp
b. Increasing the focal spot
c. increasing the part
size
thickness
d. increasing the SID - correct answers - b. increasing the focal
spot size
Increasing the focal spot size does not change the AEC response time It
affects resolution.
spatial the Decreasing the kVp increases the exposure time
because more
photons are absorbed, resulting in fewer reaching the cell(s). The same
is true for part thickness. Increasing the SID results in a longer exposure
increasing
time
of because
beam divergence and the decrease in the number of photons reaching
the cell(s).
Of the following, the greatest attenuator of x-
rays is:
a.
air
b.
c.
bone
muscle
d. fat - correct answers - b.
bone
Air allows for the greatest transmission of x-rays. The probability of bone and
soft tissue
(muscle, fat) attenuating x-rays via Compton interactions is roughly the
same. However,
since bone has a higher effective atomic number than soft tissue, bone
attenuates more
The sinus(es) sit(s) directly beneath the sella
x-rays via photoelectric
turcica.
a.
interactions.
b.
ethmoidal
frontal
c.
d. sphenoidal - correct answers - d.
maxillary
sphenoidal
The sphenoidal sinuses are usually paired (2) and are in the body of the
sphenoid
The sinusesbone.
lie below the sella turcica and extend between the posterior
cells and the
ethmoidal air dorsal
sellae.
The vein is BEST suited for
venipuncture.
a.
b.
basilic
popliteal
c.
d. right internal jugular - correct answers - a.
femoral
basilic
,The basilica and cephalic veins are the 2 most common sites of
venipuncture.
popliteal The
and femoral veins are in the lower extremities, which are harder to
access only
should and be used in cases of emergency. The right internal jugular
vein is more
commonly used for central venous access and is not a common site for
venipuncture.
Primary radiation barriers must be AT LEAST feet
a.
high.
5
b.
6
c.
7
d. 8 - correct answers -
c. 7
Primary protective barriers are required to be 7 feet high from
the door.
The sphincter prevents reflux of stomach contents into the
a.
esophagus.
pyloric
b.
c.
cardiac
ileocecal
d. duodenal - correct answers - b.
cardiac
The cardiac sphincter is located at the esophagogastric junction.
When working
properly, it prevents back flow of stomach contents into the
esophagus.
The AEC controls which of the following exposure
variables?
a.
b. focal spot size - correct answers - c.
kVp
seconds
The AEC device is designed to control the time of exposure. The
remaining
factors aretechnical
chosen by the
radiographer.
The receives electrons immediately after they are read out from
an imaging
detecto
r.
a.
b. helium neon
transformer
laser
c. liquid crystal
d. analog-to-digital converter - correct answers - d. analog-to-digital
display
converter
Electrons are analog data. Once they leave the detector, they are sent to the
analog-to-
digital converter for sampling and quantization. Hence, the image is
digital
converted into a
image.
An image that has many shades of gray with few differences among them is
defined as
exhibitin
a. high spatial
g:
resolution
b. low
c. high dynamic
contrast
range
, d. low bit depth - correct answers - b. low
contrast
Low-contrast images consist of many gray shades with very little differences
among the
shades. These images are also referred to as exhibiting long-scale
contrast. Spatial
resolution deals with image sharpness and dynamic range is the imaging
range of response to exposures. Bit depth has to do with the number of
detector's
gray ashades
that system can yield. A low bit depth system would actually result in an
image that
displays few shades of gray. In other words, the image would appear more
black and
whit
e.
Which of the following structures is located in the
mediastinum?
a. right middle lobe and esophagus
b. left upper lobe and heart
c. aorta and thyroid
d. trachea and thymus - correct answers - d. trachea and
Structures
thymus located in the mediastinum are the heart, great vessels, trachea,
thymus, lymphatics, nerves, fibrous tissue,
esophagus,
and fat.
A terminally ill patient has asked the doctor about possible volunteer
opportunities
hospital. in thethat if she can volunteer in the hospital, she might be
She says
ablelife
her to extend
a bit longer from doing good deeds. This represents the stage of
grief for
the
a.
patient.
bargaining
b.
c.
anger
denial
d. depression - correct answers - a.
bargaining
The bargaining stage focuses on the hope the patient has to extend her life.
Anger once
occur can the patient realizes her life is being interrupted by the illness.
Denial can
include rejecting information and preferring to be left alone. Depression
affects the
patient's mood or behavior regarding the illness, and can cause despair and
mourning.
Which of the following are facial
bones?
a. nasal, lacrimal, vomer, and
b. maxillary, zygoma, palatine, and
mandible
parietal
c. vomer, zygoma, sphenoid, and
d. frontal, ethmoid, vomer, and mandible - correct answers - a. nasal,
lacrimal
lacrimal, vomer,
and
mandible
The facial bones include nasal (2), lacrimal (2), maxillary (2), zygoma
(2), palatinenasal conchae (2), and
(2),inferior
mandible.
Which of the following statements is TRUE regarding standard
precautions for
venipunctur
a. standard precautions are not necessary for simple
e?
needle sticks
