Exam Questions and Answers (Latest
Update 2026)
Attenuation:
a. is radiation that emerges from the patient
b. describes changes in the x-ray beam as it travels through the
patient
c. produces only scatter radiation
d. occurs only at doses used in radiation therapy -
correct answer ✅Describes changes in the x-ray beam as it travels
through the patient
Which photon-tissue interaction makes radiography possible
because of its creation of image contrast?
a. Compton
b. Coherent
c. Photoelectric
d. Pair production -
correct answer ✅Photoelectric
,Radiologic Technology ARRT Review
Exam Questions and Answers (Latest
Update 2026)
Which photon-tissue interaction produces radiation that may
expose others in the room during fluoroscopy?
a. Compton
b. Coherent
c. Photoelectric
d. Pair production -
correct answer ✅Compton
The SI unit of absorbed dose:
a. Coulombs/kilogram
b. Gray
c. Curie
d. Rad -
correct answer ✅Gray
The SI unit of radioactivity:
,Radiologic Technology ARRT Review
Exam Questions and Answers (Latest
Update 2026)
a. Becqueral
b. Rem
c. Quality factor
d. Curie -
correct answer ✅Becqueral
Measurement of positive and negative particles created when
radiation ionizes atoms in the air:
a. Becquerel
b. Sievert
c. Roentgen
d. Curie -
correct answer ✅Roentgen
Linear energy transfer:
a. is the same for all types of radiation
, Radiologic Technology ARRT Review
Exam Questions and Answers (Latest
Update 2026)
b. is the same for wave and particulate radiations used in diagnosis
and treatment
c. occurs only during x-ray procedures
d. varies for different types of radiation -
correct answer ✅Varies for different types of radiation
The unit of the curie would be used in what imaging modality?
a. Radiography
b. CT
c. MRI
d. Nuclear Medicine -
correct answer ✅Nuclear Medicine
The smallest particle of an element that retains the characteristics
of the element:
a. compound
b. atom