CT Registry Review Questions with 100

CT Registry Review Questions with 100% Verified Correct Answers

• Which of the following statements is false?
• The elimination of superimposed structures is a distinct advantage of CT over plain film

imaging.

• CT images possess superior quality.
• Contrast resolution is approximately 10x better with CT compared to plain film imaging.
• Spatial resolution is approximately 10x better with CT compared to plain film imaging. - Correct

Answer d

• Which type of beam coverage will result in the greatest production of scatter radiation?
• Fan beam
• Pencil beam
• Area beam
• Cone beam - Correct Answer d

Which type of beam coverage is typical of SDCT systems?

• Fan beam
• Pencil beam
• Area beam
• Cone beam - Correct Answer a

Which type of beam coverage is typical of MDCT systems?

• Fan beam 1 / 4

• Pencil beam
• Area beam
• Cone beam - Correct Answer d

"Translate-Rotate" is in reference to which of the following generations of CT geometries?

• First

ii. Second iii. Third iv. Fourth

• 1 thru 4
• 1&2only
• 3 only
• 4 only - Correct Answer b

Which of the following structures possesses the ability to attenuate radiation the greatest?

• Air
• Muscle
• Bone
• Soft tissue - Correct Answer c

Which of the following structures is represented by the highest Hounsfield Unit?

• Air
• Muscle
• Bone
• Soft tissue - Correct Answer c

Which of the following HU values would be typical of a metallic pacemaker? 2 / 4

• 2000
• 1000
• -500
• -2500 - Correct Answer a

The process in CT by which different tissue attenuation values are averaged to produce one less accurate pixel reading is most likely defined as which of the following?

• Interpolation
• Extrapolation
• Volume averaging
• Beam hardening - Correct Answer c

Which of the following pieces of CT hardware is principally responsible for determining slice thickness when the system is SDCT?

• Pre-detector collimator
• Pre-patient collimator
• The cone beam collimator
• The fan beam collimator - Correct Answer b

From the choices below, please select the best way to minimize the problem associated with Partial Volume Averaging.

• Select an alternative algorithm
• Increase the slice thickness
• Decrease the slice thickness
• Increase procedure mA - Correct Answer c

Segmentation and averaging of the data results in what kind of data?

• scan data 3 / 4

• Image data
• Raw data
• 2 only
• 3 only
• 1&3only d. 1&2only - Correct Answer a

As associated with which of the following, does raw data become image data?

• The detector system
• The ADC
• The DAS
• The voxel - Correct Answer b

Which imaging plane divides the body into equal anterior and posterior portions?

• the MSP
• the MCP
• the Axial
• the Oblique - Correct Answer b

Which of the following is NOT housed in the gantry?

• X-ray source
• Cooling system
• Generator
• Slip ring system
• Collimation system
• Detector system
• 3&6only
• 1, 3 & 6 only
• / 4