Podcast
Questions and Answers
What does CTDI stand for in the context of CT dose measurement?
What does CTDI stand for in the context of CT dose measurement?
- Cranial Tissue Density Indicator
- Computed Tomography Dose Index (correct)
- Centralized Total Dose Indicator
- Center-to-Device Index
How is CTDI measured according to the provided text?
How is CTDI measured according to the provided text?
- By calculating the radiation dose to the patient's center
- With a pencil-type ionization chamber in head phantoms (correct)
- Using an MRI machine
- Using a digital radiography machine
What is the surface-to-center ratio for radiation doses in body scans?
What is the surface-to-center ratio for radiation doses in body scans?
- 1:1
- 1:2
- 3:1
- 2:1 (correct)
How is CTDIw calculated based on the text?
How is CTDIw calculated based on the text?
Where are CTDI measurements made?
Where are CTDI measurements made?
What is unique about the radiation dose in CT compared to x-ray projection imaging?
What is unique about the radiation dose in CT compared to x-ray projection imaging?
Which interaction mechanism is the principal one in CT leading to a considerable radiation dose from scattered radiation?
Which interaction mechanism is the principal one in CT leading to a considerable radiation dose from scattered radiation?
What does the Multiple Scan Average Dose (MSAD) in CT refer to?
What does the Multiple Scan Average Dose (MSAD) in CT refer to?
Which type of radiation dose measurement is commonly used in CT imaging?
Which type of radiation dose measurement is commonly used in CT imaging?
Why does the radiation dose to the slice volume tend to be higher in CT compared to chest radiography?
Why does the radiation dose to the slice volume tend to be higher in CT compared to chest radiography?
What feature of CT imaging results in an even distribution of dose compared to chest radiography?
What feature of CT imaging results in an even distribution of dose compared to chest radiography?
