17 Questions
What is the main advantage of helical or spiral CT over traditional CT scanning techniques?
Continuous data acquisition
How does helical or spiral CT improve the duty cycle compared to traditional CT scanning?
Achieving nearly 100% duty cycle
Which of the following was NOT a required technological development for the implementation of helical or spiral CT?
Photographic film processing
In helical or spiral CT, what moves continuously during the scan to acquire data from a complete volume?
X-ray tube
What technology was designed to eliminate inter-scan delays caused by winding and unwinding of connection cables in CT scanners?
Slip ring technology
Which aspect of helical or spiral CT contributes significantly to improved volume coverage speed performance?
Continuous data acquisition
What is the primary purpose of using slip ring technology in CT scanners?
To eliminate the need for rewind of system cables between rotations
How does slip ring technology improve the efficiency of data acquisition in CT scanners?
It reduces the time required to move the table to the next slice position
What is the key limitation of slip ring technology that required the development of higher-capacity x-ray tubes?
Reduced thermal capacity of the x-ray tube due to continuous operation
How does slip ring technology enable the acquisition of 3D image data in CT scanners?
It enables the table to move continuously through the gantry during scanning
What is the relationship between slip ring technology and the breath-hold technique in CT imaging?
Slip rings allow for faster rotations, reducing the time required for a breath-hold
How does slip ring technology contribute to the development of sixth-generation CT scanners?
It allows for the continuous acquisition of 3D image data through helical/spiral scanning
What is the key advantage of helical/spiral CT scanning over conventional CT scanning?
Faster scanning speed
What technology enables the continuous rotation of the X-ray tube and detectors in helical/spiral CT scanning?
Slip-ring technology
What is the primary benefit of the helical/spiral scanning technique in terms of image acquisition?
Increased volumetric coverage
How does the helical/spiral CT scanning technique address the issue of temporal resolution in conventional CT?
By reducing the scanning time
What is the primary advantage of the helical/spiral CT scanning technique for imaging moving structures, such as the heart?
Faster data acquisition
Learn about the revolutionary advancement of helical or spiral CT scanning which enables true 3D image acquisition within a single breath hold technique. Understand how the x-ray tube continuously rotates and the couch moves the patient through the rotating x-ray beam.
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