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Questions and Answers
What is the typical working life of conventional CT tubes?
What is the typical working life of conventional CT tubes?
- 1,000 hours (correct)
- 10,000 to 40,000 hours
- 40,000 to 100,000 hours
- 1,000 to 10,000 hours
What was a major challenge in the design of the new tubes?
What was a major challenge in the design of the new tubes?
- Changing the material of the tube
- Maintaining the same mass of the tube
- Increasing the mass of the tube
- Reducing the mass of the tube (correct)
What is the main reason for the design effort to reduce the mass of the tube?
What is the main reason for the design effort to reduce the mass of the tube?
- To withstand increasing gantry rotational rates (correct)
- To improve the image quality
- To reduce the cost of the tube
- To increase the scan times
What is a benefit of the new tubes compared to conventional CT tubes?
What is a benefit of the new tubes compared to conventional CT tubes?
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What is the driving factor behind the need for faster gantry rotational rates?
What is the driving factor behind the need for faster gantry rotational rates?
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Study Notes
Tube Lifespan and Design
- Working life of tubes used to date ranges from 10,000 to 40,000 hours.
- Conventional CT tubes typically have a lifespan of 1,000 hours.
- Engineering changes increased the mass of the tube, which led to design efforts focusing on reducing the mass.
- The goal of reducing mass was to better withstand increasing gantry rotational rates.
- Increasing gantry rotational rates are required by ever-faster scan times.
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