Match the following choices with the correct statement as each is related to automatic exposure control technology.
-typically 0.001 sec
A)phototiming
B)minimum response time
C)backup mAs
D)underexposed image
E)overexposed image
F)density controls
G)all three detectors
H)center detector only

Question

Quizplus · Accepted Answer

Minimum response time refers to the shortest exposure time that an AEC system can effectively terminate the exposure. This is typically 0.001 seconds or less.

Answer: A
 Phototiming is the term used to describe automatic exposure control technology. It involves measuring the amount of radiation transmitted through the patient during the exposure and terminating the exposure when the proper amount of radiation has been received.

Answer: C
 Backup mAs is the amount of radiation that will be delivered if the AEC system fails to terminate the exposure. This is set to a level that will prevent the patient from being exposed to excessive amounts of radiation.

Answer: D
 An underexposed image may occur if the AEC system terminates the exposure too early, resulting in insufficient radiation exposure of the image receptor.

Answer: E
 An overexposed image may occur if the AEC system terminates the exposure too late, resulting in excessive radiation exposure of the image receptor.

Answer: G
 AEC systems typically use three detectors placed at different positions in the x-ray beam to measure the amount of radiation transmitted through the patient.

Answer: H
 Some AEC systems use only a center detector to measure the amount of radiation transmitted through the patient. This is known as centering AEC.

Match the Following Choices with the Correct Statement as Each