ARRT REGISTRY EXAM LATEST UPDATE 2025- 2025
LATEST 200 REAL EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED
ANSWERS)|AGRADE
,Which position of the shoulder demonstrates the lesser tubercle in profile medially? - --
ANSWER>>>Internal rotation
In which position of the shoulder is the greater tubercle seen superimposed on the
humeral head? - --ANSWER>>>Internal rotation
Which carpals are best demonstrated by ulnar deviation/flexion? - --
ANSWER>>>Lateral carpals, scaphoid
The long. flat structures that project posteromedially from the pedicles are the
----------ANSWER>>>Laminae
- --ANSWER>>>
Where do the electrons that travel across the tube come from? - --
ANSWER>>>Thermionic Emission
How are the electrons accelerated across the tube? - --ANSWER>>>High Voltage
In what direction do electrons flow across the tube? - -- ANSWER>>>Cathode to Anode
(Spinning)
, How are electrons focused in the tube? - --ANSWER>>>With focusing Cups
What happens when electrons are decelerated? - --ANSWER>>>They give off Photons
How are electrons slowed down in the tube prior to emission of photons? - -
-ANSWER>>>The curve a tungsten nucleus. Bremsstrahlung Interactions
What are Characteristic Interactions? - --ANSWER>>>
What does Frequency determine in xray photons? - --ANSWER>>>Energy
What are two early somatic effects of ionizing radiation? What is the dose required for
this? - --ANSWER>>>2 Sv
redness
hair loss
What are some late somatic effects of ionizing radiation exposure? What dosage does
occur at? - --ANSWER>>>5 Sv
cancer cataracts
What is the difference between threshold and non-threshold? - --
ANSWER>>>Threshold equals specific dose non-
threshold equals chance
What is relative biologic effectiveness? - --ANSWER>>>The relative capability of
radiation with different LEDs to produce a particular biologic reaction
Describe cell radiosensitivity - --ANSWER>>>Doses of ionizing radiation produce
different degrees of damage in different kinds of human cells. The more mature and
specialized the less sensitive it is to radiation. High reproductive rate equals highly
sensitive to radiation
What is the LD 50/30 for adult humans? - --ANSWER>>>Is the dose where which 50%
of the population dies after 30 days of exposure to high amounts of ionizing radiation. 3
Sv
LATEST 200 REAL EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED
ANSWERS)|AGRADE
,Which position of the shoulder demonstrates the lesser tubercle in profile medially? - --
ANSWER>>>Internal rotation
In which position of the shoulder is the greater tubercle seen superimposed on the
humeral head? - --ANSWER>>>Internal rotation
Which carpals are best demonstrated by ulnar deviation/flexion? - --
ANSWER>>>Lateral carpals, scaphoid
The long. flat structures that project posteromedially from the pedicles are the
----------ANSWER>>>Laminae
- --ANSWER>>>
Where do the electrons that travel across the tube come from? - --
ANSWER>>>Thermionic Emission
How are the electrons accelerated across the tube? - --ANSWER>>>High Voltage
In what direction do electrons flow across the tube? - -- ANSWER>>>Cathode to Anode
(Spinning)
, How are electrons focused in the tube? - --ANSWER>>>With focusing Cups
What happens when electrons are decelerated? - --ANSWER>>>They give off Photons
How are electrons slowed down in the tube prior to emission of photons? - -
-ANSWER>>>The curve a tungsten nucleus. Bremsstrahlung Interactions
What are Characteristic Interactions? - --ANSWER>>>
What does Frequency determine in xray photons? - --ANSWER>>>Energy
What are two early somatic effects of ionizing radiation? What is the dose required for
this? - --ANSWER>>>2 Sv
redness
hair loss
What are some late somatic effects of ionizing radiation exposure? What dosage does
occur at? - --ANSWER>>>5 Sv
cancer cataracts
What is the difference between threshold and non-threshold? - --
ANSWER>>>Threshold equals specific dose non-
threshold equals chance
What is relative biologic effectiveness? - --ANSWER>>>The relative capability of
radiation with different LEDs to produce a particular biologic reaction
Describe cell radiosensitivity - --ANSWER>>>Doses of ionizing radiation produce
different degrees of damage in different kinds of human cells. The more mature and
specialized the less sensitive it is to radiation. High reproductive rate equals highly
sensitive to radiation
What is the LD 50/30 for adult humans? - --ANSWER>>>Is the dose where which 50%
of the population dies after 30 days of exposure to high amounts of ionizing radiation. 3
Sv
