Helical or Spiral CT Scanning Advancements
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Questions and Answers

What is the main advantage of helical or spiral CT over traditional CT scanning techniques?

  • Continuous data acquisition (correct)
  • Limited volume coverage
  • Intermittent data acquisition
  • Slow data processing speed
  • How does helical or spiral CT improve the duty cycle compared to traditional CT scanning?

  • Increasing duty cycle to 75%
  • Achieving nearly 100% duty cycle (correct)
  • Having a duty cycle of 0%
  • Reducing duty cycle to 50%
  • Which of the following was NOT a required technological development for the implementation of helical or spiral CT?

  • Photographic film processing (correct)
  • Slip ring technology
  • Interpolation algorithms
  • High power x-ray tubes
  • In helical or spiral CT, what moves continuously during the scan to acquire data from a complete volume?

    <p>X-ray tube</p> Signup and view all the answers

    What technology was designed to eliminate inter-scan delays caused by winding and unwinding of connection cables in CT scanners?

    <p>Slip ring technology</p> Signup and view all the answers

    Which aspect of helical or spiral CT contributes significantly to improved volume coverage speed performance?

    <p>Continuous data acquisition</p> Signup and view all the answers

    What is the primary purpose of using slip ring technology in CT scanners?

    <p>To eliminate the need for rewind of system cables between rotations</p> Signup and view all the answers

    How does slip ring technology improve the efficiency of data acquisition in CT scanners?

    <p>It reduces the time required to move the table to the next slice position</p> Signup and view all the answers

    What is the key limitation of slip ring technology that required the development of higher-capacity x-ray tubes?

    <p>Reduced thermal capacity of the x-ray tube due to continuous operation</p> Signup and view all the answers

    How does slip ring technology enable the acquisition of 3D image data in CT scanners?

    <p>It enables the table to move continuously through the gantry during scanning</p> Signup and view all the answers

    What is the relationship between slip ring technology and the breath-hold technique in CT imaging?

    <p>Slip rings allow for faster rotations, reducing the time required for a breath-hold</p> Signup and view all the answers

    How does slip ring technology contribute to the development of sixth-generation CT scanners?

    <p>It allows for the continuous acquisition of 3D image data through helical/spiral scanning</p> Signup and view all the answers

    What is the key advantage of helical/spiral CT scanning over conventional CT scanning?

    <p>Faster scanning speed</p> Signup and view all the answers

    What technology enables the continuous rotation of the X-ray tube and detectors in helical/spiral CT scanning?

    <p>Slip-ring technology</p> Signup and view all the answers

    What is the primary benefit of the helical/spiral scanning technique in terms of image acquisition?

    <p>Increased volumetric coverage</p> Signup and view all the answers

    How does the helical/spiral CT scanning technique address the issue of temporal resolution in conventional CT?

    <p>By reducing the scanning time</p> Signup and view all the answers

    What is the primary advantage of the helical/spiral CT scanning technique for imaging moving structures, such as the heart?

    <p>Faster data acquisition</p> Signup and view all the answers

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