Podcast
Questions and Answers
Which generation of CT scanners used a slice-by-slice image acquisition technique?
Which generation of CT scanners used a slice-by-slice image acquisition technique?
- Second
- Fourth (correct)
- Third
- First
What is one limitation of conventional slice-by-slice CT scanning?
What is one limitation of conventional slice-by-slice CT scanning?
- Longer inter-scan delay times
- Slice-to-slice misregisteration
- Inaccurate generation of 3-D images
- All of the above (correct)
What can be missed in slice-by-slice CT scanning due to inconsistent breathing?
What can be missed in slice-by-slice CT scanning due to inconsistent breathing?
- Tumors
- Large lesions
- Small lesions (correct)
- Bone fractures
Which generation of CT scanners solved the problem of inter-scan delays through continuous rotation of the x-ray tube?
Which generation of CT scanners solved the problem of inter-scan delays through continuous rotation of the x-ray tube?
What type of motion geometry does the spiral (helical) CT scanner use?
What type of motion geometry does the spiral (helical) CT scanner use?
What is the main advantage of the spiral (helical) CT scanner over conventional slice-by-slice scanning?
What is the main advantage of the spiral (helical) CT scanner over conventional slice-by-slice scanning?
Which generation of CT scanners introduced the spiral (helical) technique?
Which generation of CT scanners introduced the spiral (helical) technique?
Which technology is required for data transfer from the rotating gantry in Spiral CT scanners?
Which technology is required for data transfer from the rotating gantry in Spiral CT scanners?
What is the major advantage of slip-ring technology in CT scanners?
What is the major advantage of slip-ring technology in CT scanners?
What is the formula to calculate the pitch in spiral CT scanners?
What is the formula to calculate the pitch in spiral CT scanners?
What is the pitch ratio in spiral CT scanners when the table travels a distance equal to slice thickness or beam collimation?
What is the pitch ratio in spiral CT scanners when the table travels a distance equal to slice thickness or beam collimation?
What is the typical range of pitch values in spiral CT scanners?
What is the typical range of pitch values in spiral CT scanners?
What are the effects of increasing the pitch in spiral CT scanners?
What are the effects of increasing the pitch in spiral CT scanners?
What is the volume coverage in spiral CT scanners?
What is the volume coverage in spiral CT scanners?
Which of the following is true about pitch in CT scanning?
Which of the following is true about pitch in CT scanning?
What is the effect of pitch on dose in CT scanning?
What is the effect of pitch on dose in CT scanning?
What are the advantages of spiral CT scanning?
What are the advantages of spiral CT scanning?
What are the limitations of spiral CT scanning?
What are the limitations of spiral CT scanning?
What is the basic idea behind multislice spiral CT?
What is the basic idea behind multislice spiral CT?
What are the advantages of a multislice CT scanner?
What are the advantages of a multislice CT scanner?
What is the primary difference between single-slice CT and multislice CT hardware?
What is the primary difference between single-slice CT and multislice CT hardware?
Which type of CT scanner uses a wider diverging cone beam instead of a fan beam?
Which type of CT scanner uses a wider diverging cone beam instead of a fan beam?
What determines the slice thickness in single detector array CT systems?
What determines the slice thickness in single detector array CT systems?
Which clinical application involves collecting up to 64 (128 - 256) slices simultaneously?
Which clinical application involves collecting up to 64 (128 - 256) slices simultaneously?
What is the effect of increasing the pitch by a factor of 4 in a dual-slice CT scanner?
What is the effect of increasing the pitch by a factor of 4 in a dual-slice CT scanner?
What determines the slice thickness of multiple detector array CT scanners?
What determines the slice thickness of multiple detector array CT scanners?
Which technology is required for data transfer from the rotating gantry in spiral CT scanners?
Which technology is required for data transfer from the rotating gantry in spiral CT scanners?
Which generation of CT scanners introduced the spiral (helical) technique?
Which generation of CT scanners introduced the spiral (helical) technique?
What is the main advantage of the spiral (helical) CT scanner over conventional slice-by-slice scanning?
What is the main advantage of the spiral (helical) CT scanner over conventional slice-by-slice scanning?
What is the typical range of pitch values in spiral CT scanners?
What is the typical range of pitch values in spiral CT scanners?
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