Podcast
Questions and Answers
Why were Phototimer AEC devices considered exit-type devices?
Why were Phototimer AEC devices considered exit-type devices?
- Due to the positioning of detectors behind the IR (correct)
- Because they were replaced with ionization chamber systems
- They produced visible light upon radiation interaction
- Because they converted radiation into electricity
What is the function of a phototimer in radiography?
What is the function of a phototimer in radiography?
- Convert visible light energy into electrical energy
- Measure the radiation received by the detectors (correct)
- Produce visible light upon radiation interaction
- Convert radiation into electricity
What type of devices largely replaced phototimers in radiography?
What type of devices largely replaced phototimers in radiography?
- Photomultiplier tubes
- Fluorescent screens
- Ionization chamber systems (correct)
- Photodiodes
How is the total amount of radiation determined in a radiographic study using an AEC device?
How is the total amount of radiation determined in a radiographic study using an AEC device?
What happens when a sufficiently large charge is received by the light paddles in a phototimer?
What happens when a sufficiently large charge is received by the light paddles in a phototimer?
Why is it critical for a radiographer to note the mAs readout display after an exposure?
Why is it critical for a radiographer to note the mAs readout display after an exposure?
What is the purpose of exposure technique charts in radiography?
What is the purpose of exposure technique charts in radiography?
In radiography, what happens when the mAs is not adjusted accordingly for changes in part thickness?
In radiography, what happens when the mAs is not adjusted accordingly for changes in part thickness?
How does the variable kVp/fixed mAs technique chart adjust for different anatomic part sizes?
How does the variable kVp/fixed mAs technique chart adjust for different anatomic part sizes?
What is the consequence of insufficient collimation during a radiographic exposure?
What is the consequence of insufficient collimation during a radiographic exposure?
When using a fixed kVp/variable mAs technique chart, what is adjusted for variations in part thickness?
When using a fixed kVp/variable mAs technique chart, what is adjusted for variations in part thickness?
Why is quality control important in monitoring the performance of an AEC system?
Why is quality control important in monitoring the performance of an AEC system?
What is the purpose of detectors in an AEC system?
What is the purpose of detectors in an AEC system?
How does adjusting the kVp setting affect exposure time in an AEC system?
How does adjusting the kVp setting affect exposure time in an AEC system?
What is the role of mA adjustments in relation to exposure time in AEC systems?
What is the role of mA adjustments in relation to exposure time in AEC systems?
Why is it crucial for the x-ray beam to be precisely centered to the anatomic area of interest for AEC to function accurately?
Why is it crucial for the x-ray beam to be precisely centered to the anatomic area of interest for AEC to function accurately?
What does the backup time (mAs) feature provide in an AEC system?
What does the backup time (mAs) feature provide in an AEC system?
What is a common limitation associated with AEC systems in radiography?
What is a common limitation associated with AEC systems in radiography?
