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AEC

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Question
Answer
AEC was introduced in 1942 by _____________.   Russell H. Morgan  
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The single function of an AEC is to eliminate the need for the radiographer to set an exposure ____.   time  
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During the use of AEC, ___ and ____ may still be set manually.   mA; kVp  
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AEC provide diagnostic quality exposures only for structures positioned directly above the _____ _____.   ionization chambers  
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The art of using AEC is the art of ______.   positioning  
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All AEC systems permit the adjustment of the amount of ______ necessary to send the exposure termination signal.   radiation  
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The ____ controls should not be used to compensate for patient part thickness or kVp changes.   density (*AEC does this automatically*)  
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Poor positioning skills result in an _____ repeat rate when using AEC.   increased  
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AEC problems with subject density and contrast occur whenever an ____ density is present or when an ____ density is lacking.   unexpected; expected  
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Collimation located close to activated chambers should be ______.   avoided  
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The ____ ____ _____ is the length of time necessary for the AEC to respond to the ionization and send a signal to terminate the exposure.   minimum response time  
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The backup time should be set at ____ percent of the anticipated manual exposure time.   150  
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Federal law requires automatic termination at ____ mAs when working above ___ kVp.   600; 50  
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______ combine an AEC system with a technique chart that is computerized to correspond to anatomical procedures.   Anatomically programmed radiography (APR)  
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A manual technique will always provide a precisely _______ exposure.   repeatable  
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