ARRT Registry Practice Test 1
Questions With answer 100% Correct
The ejection of an electron from an atom or molecule is known as:
a. ionization
b. trephination
c. excitation
d. polymerization ✔✔ a. ionization
The upright abdomen must include the:
a. pubic symphysis at the bottom of the image
b. diaphragm at the top of the image
c. bladder at the bottom of the image
d. apices of the lungs at the top of the image ✔✔ b. diaphragm at the top of the image
The upright abdomen must include the diaphragm at the top of the image. An upright abdomen
can show air-fluid and free air in the abdomen. The highest region the free air would migrate to
is just below the diaphragm. If the diaphragm is not included on the image, the presence of air
might go undiagnosed.
For a PA axial oblique projection of the C-spine, the central ray is angle ___ degrees in the ____
direction.
a. 15 to 20; caudad
b. 15 to 20; cephalad
c. 45; caudad
d. 45; cephalic ✔✔ a. 15 to 20; caudad
,A 15 to 20 degree caudal angle coincides with the angle of the intervertebral foramina of
interest.
When electrons move through a conductor, ______ is said to flow
a. voltage
b. current
c. resistance
d. potential difference ✔✔ b. current
The act of ____ is observed on fluoroscopy during an esophagram.
a. mastication
b. deglutition
c. digestion
d. defecation ✔✔ b. deglutition
Deglutition is the act of swallowing and is one of several functions studied during an
esophagram.
A wedge filter is a type of ______ filter.
a. inherent
b. compensating
c. added
d. trough ✔✔ b. compensating
A wedge filter is a type of compensating filter. It is used to provide the receptor with uniform
exposure when imaging body structures with varying thicknesses (i.e., a foot). The thick edge of
,the filter is placed over the thin structural part and the thin edge is placed over the thick
structural part.
A backup timer for the automatic exposure control (AEC) serves to:
a. terminate the exposure in the event of equipment or operator error
b. limit the thermal loading of the anode
c. increase inherent filtration
d. modulate tube current to reduce patient exposure ✔✔ a. terminate the exposure in the
event of equipment or operator error
When type of device is the mA selector?
a. capacitor
b. inverter
c. rectifier
d. rheostat ✔✔ d. rheostat
A rheostat is the mA selector, and is a type of variable resistor. The rheostat controls the
filament temperature by adjusting the resistance that is applied to the filament. A capacitor
stores charges; an inverter converts DC to AC and a rectifier converts AC to DC.
Tinctures, ointments, lotions, and sprays are administered by the ______ route.
a. topical
b. intravenous
c. oral
d. intramuscular ✔✔ a. topical
, The drugs listed are applied directly to the skin, or topically. Intravenous administration is by
way of the veins. Oral administration is by mouth, Intramuscular medications are injected into
muscle.
Exposure of an embryo or fetus to radiation from ______ can result in congenital abnormalities.
a. 0 days to 9 days of development
b. 10 days to 6 weeks of development
c. 6 weeks to 20 weeks of development
d. 21 weeks to term ✔✔ b. 10 days to 6 weeks of development
When evaluating an AP projection (open-mouth) radiograph of C1-C2, the occlusal surface of
the ____ should be superimposed with the _____.
a. top incisors; base of the skull
b. bottom incisors; base of the skull
c. top incisors; dens
d. bottom incisors; inferior articular process of C1 ✔✔ a. top incisors; base of the skull
Having occlusal surface of the top incisors superimposed on the base of the skull decreases the
likelihood of either of them being superimposed on the dens or the articulations between C1
and C2.
The interventional Commission of Radiological Protection (ICRP) dose equivalent limit for the
hands is ____ mSv.
a. 20
b. 50
c. 150
d. 500 ✔✔ d. 500
Questions With answer 100% Correct
The ejection of an electron from an atom or molecule is known as:
a. ionization
b. trephination
c. excitation
d. polymerization ✔✔ a. ionization
The upright abdomen must include the:
a. pubic symphysis at the bottom of the image
b. diaphragm at the top of the image
c. bladder at the bottom of the image
d. apices of the lungs at the top of the image ✔✔ b. diaphragm at the top of the image
The upright abdomen must include the diaphragm at the top of the image. An upright abdomen
can show air-fluid and free air in the abdomen. The highest region the free air would migrate to
is just below the diaphragm. If the diaphragm is not included on the image, the presence of air
might go undiagnosed.
For a PA axial oblique projection of the C-spine, the central ray is angle ___ degrees in the ____
direction.
a. 15 to 20; caudad
b. 15 to 20; cephalad
c. 45; caudad
d. 45; cephalic ✔✔ a. 15 to 20; caudad
,A 15 to 20 degree caudal angle coincides with the angle of the intervertebral foramina of
interest.
When electrons move through a conductor, ______ is said to flow
a. voltage
b. current
c. resistance
d. potential difference ✔✔ b. current
The act of ____ is observed on fluoroscopy during an esophagram.
a. mastication
b. deglutition
c. digestion
d. defecation ✔✔ b. deglutition
Deglutition is the act of swallowing and is one of several functions studied during an
esophagram.
A wedge filter is a type of ______ filter.
a. inherent
b. compensating
c. added
d. trough ✔✔ b. compensating
A wedge filter is a type of compensating filter. It is used to provide the receptor with uniform
exposure when imaging body structures with varying thicknesses (i.e., a foot). The thick edge of
,the filter is placed over the thin structural part and the thin edge is placed over the thick
structural part.
A backup timer for the automatic exposure control (AEC) serves to:
a. terminate the exposure in the event of equipment or operator error
b. limit the thermal loading of the anode
c. increase inherent filtration
d. modulate tube current to reduce patient exposure ✔✔ a. terminate the exposure in the
event of equipment or operator error
When type of device is the mA selector?
a. capacitor
b. inverter
c. rectifier
d. rheostat ✔✔ d. rheostat
A rheostat is the mA selector, and is a type of variable resistor. The rheostat controls the
filament temperature by adjusting the resistance that is applied to the filament. A capacitor
stores charges; an inverter converts DC to AC and a rectifier converts AC to DC.
Tinctures, ointments, lotions, and sprays are administered by the ______ route.
a. topical
b. intravenous
c. oral
d. intramuscular ✔✔ a. topical
, The drugs listed are applied directly to the skin, or topically. Intravenous administration is by
way of the veins. Oral administration is by mouth, Intramuscular medications are injected into
muscle.
Exposure of an embryo or fetus to radiation from ______ can result in congenital abnormalities.
a. 0 days to 9 days of development
b. 10 days to 6 weeks of development
c. 6 weeks to 20 weeks of development
d. 21 weeks to term ✔✔ b. 10 days to 6 weeks of development
When evaluating an AP projection (open-mouth) radiograph of C1-C2, the occlusal surface of
the ____ should be superimposed with the _____.
a. top incisors; base of the skull
b. bottom incisors; base of the skull
c. top incisors; dens
d. bottom incisors; inferior articular process of C1 ✔✔ a. top incisors; base of the skull
Having occlusal surface of the top incisors superimposed on the base of the skull decreases the
likelihood of either of them being superimposed on the dens or the articulations between C1
and C2.
The interventional Commission of Radiological Protection (ICRP) dose equivalent limit for the
hands is ____ mSv.
a. 20
b. 50
c. 150
d. 500 ✔✔ d. 500
