Computed Tomography Prep Exam Newest
2026/2027 Complete Questions And Detailed
Page | 1
Correct Verified Answers (Well Elaborated)
Guaranteed Pass|Already Top Rated A+
COMPUTED TOMOGRAPHY
Get ready for your Computed Tomography (CT) certification EXAM
2025/2026 with this comprehensive exam prep guide. Covers core
concepts, imaging techniques, radiation safety, and patient care
essentials. Ideal for radiologic technologists aiming to pass their CT
exam with confidence.
Which of the following reduces the scatter radiation reaching
the detectors?
A. Post-patient collimation
B. Pre-patient collimation
C. Pre-detector collimation
D. Both A & C ...... ANSWER ...... D. Both A & C
Which of the following is the primary interaction between x-
ray photons and tissue during computed tomography?
A. Bremsstrahlung
B. Characteristic
, C. Compton effect
D. Coherent scatter ...... ANSWER ...... C
Page | 2
The process by which electrons are produced at the cathode
of a CT x-ray tube is known as:
A. rectification
B. anode heel effect
C. thermionic emission
D. isotropic emission ...... ANSWER ...... C
The assignment of different generations to CT scanners is
based on the configuration of the:
A. patient and gantry
B. tube and detectors
C. anode and cathode
D. tube and collimators ...... ANSWER ...... B
When one is using a third-generation CT scanner, it is
important that reference detectors positioned at the
peripheral portions of the detector array be exposed to:
, A. homogeneous radiation
Page | 3 B. unattenuated radiation
C. monochromatic radiation
D. remnant radiation ...... ANSWER ...... D
In 1979, the scientists __________ and __________ shared
the Nobel Prize for their research in computed tomography
A. Watson and Crick
B. Olendorf and Hounsfield
C. Hounsfield and Cormack
D. Hounsfield and Ambrose ...... ANSWER ...... C
The type of compensating filter used at the x-ray tube of a CT
scanner is called a:
A. kernel
B. water bath
C. bow-tie filter
D. wedge filter ...... ANSWER ...... C
, The interaction between x-ray and matter that is responsible
for the production of the scatter radiation absorbed by the
patient and detectors is:
Page | 4
A. Compton effect.
B. bremsstrahlung.
C. photoelectric.
D. characteristic ...... ANSWER ...... A
The types of detectors used in computed tomography are:
1. Gas ionization
2. Stimulable phosphor
3. Scintillation
A. 1 only
B. 3 only
C. 1 and 3 only
D. 2 and 3 only ...... ANSWER ...... C
Which of the following is used in gas ionization CT
detectors?
2026/2027 Complete Questions And Detailed
Page | 1
Correct Verified Answers (Well Elaborated)
Guaranteed Pass|Already Top Rated A+
COMPUTED TOMOGRAPHY
Get ready for your Computed Tomography (CT) certification EXAM
2025/2026 with this comprehensive exam prep guide. Covers core
concepts, imaging techniques, radiation safety, and patient care
essentials. Ideal for radiologic technologists aiming to pass their CT
exam with confidence.
Which of the following reduces the scatter radiation reaching
the detectors?
A. Post-patient collimation
B. Pre-patient collimation
C. Pre-detector collimation
D. Both A & C ...... ANSWER ...... D. Both A & C
Which of the following is the primary interaction between x-
ray photons and tissue during computed tomography?
A. Bremsstrahlung
B. Characteristic
, C. Compton effect
D. Coherent scatter ...... ANSWER ...... C
Page | 2
The process by which electrons are produced at the cathode
of a CT x-ray tube is known as:
A. rectification
B. anode heel effect
C. thermionic emission
D. isotropic emission ...... ANSWER ...... C
The assignment of different generations to CT scanners is
based on the configuration of the:
A. patient and gantry
B. tube and detectors
C. anode and cathode
D. tube and collimators ...... ANSWER ...... B
When one is using a third-generation CT scanner, it is
important that reference detectors positioned at the
peripheral portions of the detector array be exposed to:
, A. homogeneous radiation
Page | 3 B. unattenuated radiation
C. monochromatic radiation
D. remnant radiation ...... ANSWER ...... D
In 1979, the scientists __________ and __________ shared
the Nobel Prize for their research in computed tomography
A. Watson and Crick
B. Olendorf and Hounsfield
C. Hounsfield and Cormack
D. Hounsfield and Ambrose ...... ANSWER ...... C
The type of compensating filter used at the x-ray tube of a CT
scanner is called a:
A. kernel
B. water bath
C. bow-tie filter
D. wedge filter ...... ANSWER ...... C
, The interaction between x-ray and matter that is responsible
for the production of the scatter radiation absorbed by the
patient and detectors is:
Page | 4
A. Compton effect.
B. bremsstrahlung.
C. photoelectric.
D. characteristic ...... ANSWER ...... A
The types of detectors used in computed tomography are:
1. Gas ionization
2. Stimulable phosphor
3. Scintillation
A. 1 only
B. 3 only
C. 1 and 3 only
D. 2 and 3 only ...... ANSWER ...... C
Which of the following is used in gas ionization CT
detectors?
