AEC Phototiming Detectors Relationship
100
What is phototiming and ionization chambers
Two types of AEC system are
100
What is phototiming
AEC is also referred to as_______.
100
What ishould ionization chambers
The common type of AEC system is
100
What is image characteristics
AEC has no effects on ___, such as contrast
200
What is quantity
AEC controls only the _______ of radiation reaching the IR
200
What is exit-type
Phototimer AEC are considered ______ devices because the detectors are positioned behind the ir
200
What is detector selection
_______ ____________ is best for measuring radiation that passes through anatomic area of intrest
200
What is inverse
AEC response has a ___ relationship with KVP levels
300
What is backup time?
_________ _____________ refers to the max length of time the xray exposure will continue whenever AEC system.
300
What is 150% to 200%
Back up time is at _____ of the expected exposure time.
300
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.
300
What is decreased
Using a higher KVP with AEC _____ the exposure time and overall mAs needed to produce a diagnostic image reducing patients exposure
400
What is APR
______ is controlled by an integrated circuit or computer chips.
400
What is exposure technique charts
Pre-established guidelines used by the radiographer to select standardized manual.
400
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.
400
What is inverse?
mA level and AEC response is _____.
500
What is ALARA?
As low as reasonably achievable
500
What is minimum respossess time?
Refers to the shortest exposure time that the system can produce.
500
What is calipers
What is used to measure part thickness
500
What is part thickness?
The variable KVP chart adjusts the KVP for changes in __________ while maintaining a fixed mAs






Rad ch 8

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