AEC | Phototiming | Detectors | Relationship |
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What is phototiming and ionization chambers
Two types of AEC system are
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What is phototiming
AEC is also referred to as_______.
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What ishould ionization chambers
The common type of AEC system is
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What is image characteristics
AEC has no effects on ___, such as contrast
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What is quantity
AEC controls only the _______ of radiation reaching the IR
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What is exit-type
Phototimer AEC are considered ______ devices because the detectors are positioned behind the ir
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What is detector selection
_______ ____________ is best for measuring radiation that passes through anatomic area of intrest
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What is inverse
AEC response has a ___ relationship with KVP levels
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What is backup time?
_________ _____________ refers to the max length of time the xray exposure will continue whenever AEC system.
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What is 150% to 200%
Back up time is at _____ of the expected exposure time.
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What is proper centering of areal of interest
When using the detectors, _______________ is important to ensure proper exposure of the IRISH preventing over exposure and underexposure.
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What is decreased
Using a higher KVP with AEC _____ the exposure time and overall mAs needed to produce a diagnostic image reducing patients exposure
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What is APR
______ is controlled by an integrated circuit or computer chips.
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What is exposure technique charts
Pre-established guidelines used by the radiographer to select standardized manual.
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What is size of the xray field ?
The ______ is a factor when AEC systems are used because additional scatter radiation produced by failure to restrict the beam accurately.
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What is inverse?
mA level and AEC response is _____.
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What is ALARA?
As low as reasonably achievable
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What is minimum respossess time?
Refers to the shortest exposure time that the system can produce.
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What is calipers
What is used to measure part thickness
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What is part thickness?
The variable KVP chart adjusts the KVP for changes in __________ while maintaining a fixed mAs
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