Computed Tomography Exam Prep
Questions and Answers (Latest Update
2025)
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 - Correct 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 - Correct Answer ✅C
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 - Correct Answer ✅C
, Computed Tomography Exam Prep
Questions and Answers (Latest Update
2025)
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 - Correct 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
B. unattenuated radiation
C. monochromatic radiation
D. remnant radiation - Correct 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
Questions and Answers (Latest Update
2025)
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 - Correct 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 - Correct Answer ✅C
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 - Correct Answer ✅C
, Computed Tomography Exam Prep
Questions and Answers (Latest Update
2025)
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 - Correct 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
B. unattenuated radiation
C. monochromatic radiation
D. remnant radiation - Correct 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
