Podcast
Questions and Answers
What does the term 'conversion efficiency' refer to?
What does the term 'conversion efficiency' refer to?
- The stability of the detector with time
- The ability to convert x-ray signals to electrical signals (correct)
- The speed at which the detector detects x-ray events
- The temperature sensitivity of the detector
Why is a nonideal detector system indicated by an overall efficiency value of less than 1?
Why is a nonideal detector system indicated by an overall efficiency value of less than 1?
- Because it necessitates an increase in patient radiation dose for image quality maintenance (correct)
- Because it leads to faster response times
- Because it requires lower patient radiation doses
- Because it is insensitive to temperature variations
What type of detectors are used in CT systems to minimize patient radiation dose?
What type of detectors are used in CT systems to minimize patient radiation dose?
- Detectors with low overall efficiency
- Detectors that are very stable with time
- Detectors with high overall efficiency (correct)
- Detectors with small dynamic range
What is the purpose of adaptive section collimation in CT systems?
What is the purpose of adaptive section collimation in CT systems?
How do gas-ionization detectors convert x-ray energy into electrical energy?
How do gas-ionization detectors convert x-ray energy into electrical energy?
Why should the response times of detectors be very short in CT systems?
Why should the response times of detectors be very short in CT systems?
What type of detectors are used in modern MSCT scanners?
What type of detectors are used in modern MSCT scanners?
What is the primary function of the data acquisition system (DAS) in CT scanners?
What is the primary function of the data acquisition system (DAS) in CT scanners?
Which of the following techniques is used to reduce unnecessary radiation exposure in CT scanning?
Which of the following techniques is used to reduce unnecessary radiation exposure in CT scanning?
What is the primary advantage of solid-state detectors over gas-ionization detectors in CT scanners?
What is the primary advantage of solid-state detectors over gas-ionization detectors in CT scanners?
Which component of the CT scanner is responsible for converting the measured radiation into digital data?
Which component of the CT scanner is responsible for converting the measured radiation into digital data?
What is the purpose of adaptive section collimation in CT scanning?
What is the purpose of adaptive section collimation in CT scanning?
Which technology helps in reducing overexposure to tissues during spiral scanning in CT?
Which technology helps in reducing overexposure to tissues during spiral scanning in CT?
What is an essential characteristic of CT detectors for good image quality production?
What is an essential characteristic of CT detectors for good image quality production?
Which factor does absorption efficiency of CT detectors depend on?
Which factor does absorption efficiency of CT detectors depend on?
Which characteristic of detectors determines how efficiently they can obtain photons transmitted from the patient?
Which characteristic of detectors determines how efficiently they can obtain photons transmitted from the patient?
How do CT detectors convert radiation from the patient into information?
How do CT detectors convert radiation from the patient into information?
