Podcast
Questions and Answers
What is the primary purpose of data acquisition in CT?
What is the primary purpose of data acquisition in CT?
- To process the image
- To display the image
- To store the raw data
- To collect views from the patient to produce the CT image (correct)
What is the term for the reduction of the intensity of a beam of radiation as it passes through an object?
What is the term for the reduction of the intensity of a beam of radiation as it passes through an object?
- Absorption
- Transmission
- Attenuation (correct)
- Scattering
What is measured by the detectors during data acquisition?
What is measured by the detectors during data acquisition?
- Relative transmission values (correct)
- X-ray tube voltage
- Intensity of radiation
- Attenuation coefficients
How are structures represented in a CT image?
How are structures represented in a CT image?
What is the problem in CT image reconstruction?
What is the problem in CT image reconstruction?
What is an advantage of gas-filled detectors?
What is an advantage of gas-filled detectors?
What is the purpose of the photodiode in a solid-state detector?
What is the purpose of the photodiode in a solid-state detector?
What is a characteristic of scintillation crystals used in solid-state detectors?
What is a characteristic of scintillation crystals used in solid-state detectors?
What is the function of the analog-to-digital converter (ADC) in detector electronics?
What is the function of the analog-to-digital converter (ADC) in detector electronics?
What is the primary function of the data-acquisition system (DAS) in CT?
What is the primary function of the data-acquisition system (DAS) in CT?
What is a disadvantage of gas-filled detectors?
What is a disadvantage of gas-filled detectors?
What is the term for the process of converting light energy into electrical energy in a solid-state detector?
What is the term for the process of converting light energy into electrical energy in a solid-state detector?
What is a characteristic of solid-state detectors?
What is a characteristic of solid-state detectors?
What is the role of the detector array in CT?
What is the role of the detector array in CT?
What is the purpose of the detector electronics in CT?
What is the purpose of the detector electronics in CT?
