Computed Tomography Exam Prep questions with verified answers

Computed Tomography Exam Prep
questions with verified answers

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

, 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

C. Hounsfield and Cormack

D. Hounsfield and Ambrose - correct 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