What is the primary purpose of AEC
Controls time of exposure/shuts off exposure based on part thickness
What part of the exposure does AEC control?
Time (s part of mAs)
Where are the locations of the ionization chambers?
Between the patient and the IR
How does the density control button work?
It increases mAs under control of the AEC chamber
Describe a situation when you would use density control?
Lateral c-spine X-ray
Where is the location of the center ion chamber?
Where you centered to
Describe where you would use the outer chambers?
When body part thickness covers the outer chambers rather than the center chamber
What is the purpose of backup time?
When AEC fails, backup time will shut off exposure.
What is the maximum exposure you can set?
600 mAs and 50 kv
What is the purpose of having a technique chart?
to use the right technique for room and for patient
Describe the proper use of calipers?
measure thickest part of the body part and use the technique chart based on measurement
What is the purpose of the anatomically programmed radiograph?
So you don’t have to program manually to body part
What is the difference between fixed vs variable kvp
fixed: changes mAs
variable: changes kvp
