Ch.8 AEC

Question 0

What type of device is used for radiation detection with the AEC?

Answer 0

Gas ion chamber

Question 1

Using AEC you can set these two things on the control panel but not time.

Answer 1

KVp and mA

Question 2

What controls density on the X-ray machine?

Answer 2

Thyratron

Question 3

The thyratron pre-sets the amount of ____ the capacitor will hold.

Answer 3

Charge

Question 4

What determines the time of the exposure while using the AEC?

Answer 4

The patients thickness

Question 5

Name the factors that affect the response of the AEC.

Answer 5

KVp
MA
Minimum response time
Backup time
Detector selection
Density/intensity selection
Collimation
Pt thickness
Type of IR

Question 6

What does minimum response time mean (MRT)?

Answer 6

The set minimum amount of time and signal in order to operate

Question 7

What is a typical MRT time?

Answer 7

.002s-.2s

Question 8

What is back up time on an AEC?

Answer 8

A manual backup time/mA to be set if the AEC fails.

Question 9

What is a general backup time for the AEC?

Answer 9

2 times the expected exposure time or mAs for a particular projection

Question 10

What cell will give the greatest exposure on a PA chest?

Answer 10

Center cell