CT-Exam Secrets Practice Questions,
part 2
What process reduces the longest wave length photons creating a more monochromatic beam and
reducing patient radiation dose?
A. Filtration
B. Detector collimation
C. Slip rings
D. None of the above - Answer-A. Filtration
What component located within the CT Gantry measures transmitted photons that pass completely
through the patient?
A. Filters
B. Detectors
C. Collimators
D. Slip Rings - Answer-B. Detectors
What is the most efficient and most common type of detector utilized today?
A. Xenon gas detectors
,B. Stationary detectors
C. Solid State Crystalline detectors
D. Single detectors - Answer-C. Solid state crystalline detectors
During Image Reconstruction in the Data Acquisition System, what system reconstructs the amplified
digitized raw data into the CT images?
A. amplifier
B. Analogue-to-digital converter (ADC)
C. Array processor
D. Operator's Console - Answer-C. Array processor
The development of what electromechanical device consisting of circular electrical conductive rings and
brushes allowed for helical scanning capabilities?
A. Amplifier
B. Array Processor
C. Electron gun
D. Slip Rings - Answer-D. Slip Rings
What CT development allows for more than one slice to be acquired during each tube rotation?
A. Host Computers
B. Data acquisition system
C. Multi-row detector arrays
D. Single-row detector arrays - Answer-C. Multi-row detector arrays
What is the component that takes a low voltage and passes it through a series of wire coils to produce a
very large voltage?
A. X-ray tube
, B. High Voltage generator
C. Low Voltage generator
D. Amplifier - Answer-B. High voltage generator
What parameter determines the number of x-ray photons produced by the CT x-ray tube?
A. mA
B. kVp
C. Slice Thickness
D. Table increment - Answer-A. mA
What type of collimation restricts the x-ray beam immediately after it exits the CT tube and before any
photons interact with a patient's body?
A. Post-patient collimation
B. Pre-detector collimation
C. Pre-patient collimation
D. All of the above - Answer-C. Pre-patient collimation
What system during Image Reconstruction in the Data Acquisition System makes the small energy or
light emitted from the detectors larger?
A. Amplifier
B. Analogue-to-Digital Converter (ADC)
C. Array Processor
D. Operator's Console - Answer-A. Amplifier
CT generators produce high kV to increase the intensity and penetration of the beam. What is the
general kV range?
A. 140-170kV
part 2
What process reduces the longest wave length photons creating a more monochromatic beam and
reducing patient radiation dose?
A. Filtration
B. Detector collimation
C. Slip rings
D. None of the above - Answer-A. Filtration
What component located within the CT Gantry measures transmitted photons that pass completely
through the patient?
A. Filters
B. Detectors
C. Collimators
D. Slip Rings - Answer-B. Detectors
What is the most efficient and most common type of detector utilized today?
A. Xenon gas detectors
,B. Stationary detectors
C. Solid State Crystalline detectors
D. Single detectors - Answer-C. Solid state crystalline detectors
During Image Reconstruction in the Data Acquisition System, what system reconstructs the amplified
digitized raw data into the CT images?
A. amplifier
B. Analogue-to-digital converter (ADC)
C. Array processor
D. Operator's Console - Answer-C. Array processor
The development of what electromechanical device consisting of circular electrical conductive rings and
brushes allowed for helical scanning capabilities?
A. Amplifier
B. Array Processor
C. Electron gun
D. Slip Rings - Answer-D. Slip Rings
What CT development allows for more than one slice to be acquired during each tube rotation?
A. Host Computers
B. Data acquisition system
C. Multi-row detector arrays
D. Single-row detector arrays - Answer-C. Multi-row detector arrays
What is the component that takes a low voltage and passes it through a series of wire coils to produce a
very large voltage?
A. X-ray tube
, B. High Voltage generator
C. Low Voltage generator
D. Amplifier - Answer-B. High voltage generator
What parameter determines the number of x-ray photons produced by the CT x-ray tube?
A. mA
B. kVp
C. Slice Thickness
D. Table increment - Answer-A. mA
What type of collimation restricts the x-ray beam immediately after it exits the CT tube and before any
photons interact with a patient's body?
A. Post-patient collimation
B. Pre-detector collimation
C. Pre-patient collimation
D. All of the above - Answer-C. Pre-patient collimation
What system during Image Reconstruction in the Data Acquisition System makes the small energy or
light emitted from the detectors larger?
A. Amplifier
B. Analogue-to-Digital Converter (ADC)
C. Array Processor
D. Operator's Console - Answer-A. Amplifier
CT generators produce high kV to increase the intensity and penetration of the beam. What is the
general kV range?
A. 140-170kV
