Radiographic Exposure Review Automatic Exposure Control
Terms
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- True of False: Most modern radiographic equipment is equipped with automatic exposure control devices:
- True
- True of False: One problem with the use of automatic exposure devices is over dependence resulting in a lack of ability to work with manual techniques:
- True
- When using automatic exposure control devices "AEC" what exposure factor is selected by the AEC?
- Time
- When using AEC the radiographer would or would not set the KVp:
- Would
- When using AEC if the Kvp is high the patient dose is relatively high or low?
- Low
- When using AEC if the Kvp is high the radiographic contrast will be relatively high or low?
- Low
- When using AEC the Radiographer does or does not set the mAs?
- does not
- When using back up time the time set should be set to no more than what amount?
- Twice the expected mAs
- Where it the ionization type AEC chamber is located:
- Between the patient and the image receptor.
- True or False: The number of chambers used for AEC may vary:
- True
- True or False: The choice of field is not an important factor in the use of AEC:
- False
- If when radiographing the spine the chamber used is positioned under the lung the resulting radiograph will be:
- Under exposed
- AEC is or is not recommended for barium studies like the small bowel:
- is not
- Automatic exposure control devices are used to keep what radiographic quality equal on all patients?
- Density
- The maximum time that an AEC exposure will continue is known at what?
- Back up time
- Which type of automatic exposure control device is the most accurate?
- Ionization chamber
- What might be the probable cause of a lack of density in barium enema air contrast radiograph taken in conjunction with an automatic exposure control device?
- Air located above the AEC cell
- When radiographing the lumbar spine in the lateral position if the abdomen instead of the spine is located above the sensor, would the radiograph be diagnostic?
- Yes