AEC/AED
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| AEC will produce consistant density regardless of | Patient Size or Pathological Condition
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| Benefits of AEC | decrease pt dose, increase departmental efficiency, reduced film cost, reduced processing chemical cost, & prolonged tube life
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| Two types of AEC units | ionization chamber & phototimer type.
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| The ionization chambers in an AED are located ___ the cassette. | In front of
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| All of the following are advantages of AEC, except | Eliminates need for proper positioning
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| Minimum response time refers to the time that must be set by the radiographer when making a radiographic exposure | false
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| The purpose of the backup timer in an AED is to | Protect the pt and Protect the x-ray tube
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| With AEC, each incremental density setting corresponds to a ___ change in density | 25%
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| With which of the AEC units listed below does backscatter have the greatest impact on image quality? | Phototimer type
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| The two most important factors affecting film density when using AEC are | positioning and detector selection
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| All of the following can cause overexposure when using AEC except | SID
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| It is acceptable tp use the center detector when performing abdominal radigraphy | False
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| The outer detectors can be used with large field sizes | True
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| OID affects density when uing AEC | False
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| Increasing kV and mA can shorten the minimum response time | False
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| Beam intensity affects exposure time when using AEC | True
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| Activation of the backup timer is most often caused by | Radiographic Error
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| Backup timers should never allow the pt to be exposed to more than ___ mAs | 600
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| If the xray tube is not properly aligned to the Bucky grid, the exposure time will be | Excessive long
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| The exposure time can be intentionally increased when using AEC by | Decreasing mA
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| When using AEC, if a fast-speed sreen cassette were used instead of a medium-speed screen cassette, the exposure time would be | unaffected
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| All of the following can affect AEC exposure time, except | Film speed
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| Insufficient collimation __ exposure time when using AEC | Reduces
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| The ionization chambers are situated between grid of the bucky device and the cassette. | (Usually 3 chambers)
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| Two most important factors that affect image quality to consider are pt positioning and detector selection. |
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Created by:
Darla1083