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 (C)</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 (A)</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 (A)</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 (D)</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 (B)</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 (B)</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 (D)</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 (D)</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 (B)</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 (A)</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 (A)</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 (B)</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 (C)</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 (A)</p> Signup and view all the answers

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