Automatic Exposure Control (AEC) Quiz

What is the primary function of the AEC system?

• To control the image receptor

• To control the mA

• To control the kVp

• To control the exposure time

Typically, how many detectors are there in the AEC system?

• Three

• One

• Six

• Two

What is the shape of the ion chambers on the Bucky?

• Rectangle

• Circle

• Triangle

• Square

What is the minimum response time for the AEC system?

• 0.2 seconds

• 2 seconds

• 0.02 seconds

• 0.002 seconds

What is the purpose of the backup timer in the AEC system?

• To increase exposure

• To decrease exposure

• To prevent excessive exposure

• To control kVp

What happens when the ion chamber receives enough exposure?

• The mA decreases

• The kVp increases

• The exposure stops

• The exposure continues

What should be done if the patient has metal in the area of the ionization chamber?

• Decrease the mA

• Use manual technique

• Increase the exposure time

• Increase the kVp

What is the result of incorrect detector cell configuration?

• Both overexposure and underexposure

• Underexposure

• Overexposure

• No effect

What should be done to avoid scatter reaching the ionization chamber?

• Increase the mA

• Use a higher density control

• Collimate appropriately

• Increase the kVp

What should be done if the AEC system malfunctions?

• Increase the exposure time

• Decrease the mA

• Use manual technique

• Increase the kVp