RTE 1401 Essentials of Radiographic Physics & Imaging ch 13
Question 1.
Automatic Exposure Control (AEC)
ANSWER
a system used to constantly control the amount of radiation reaching the image receptor by terminating the length of exposure
Question 2.
What is the goal for an AEC
ANSWER
to produce constant levels of exposure
Question 3.
Radiation Detectors
ANSWER
radiation is transmitted through the patient and converted into an electrical signal, terminating the exposure time -older units are called phototimers
Question 4.
What are two types of AEC systems
ANSWER
-phototimers (old) -Ionization changer (new)
Question 5.
Phototimer AEC devices
ANSWER
use florescent screen and a device that converts a light to electricity
Question 6.
Photomultiplier (PM) tube
ANSWER
an electronic device that converts visible light energy into electrical energy
Question 7.
Photodiode
ANSWER
a solid-state device that preforms the same function
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Question 1.
Automatic Exposure Control (AEC)
ANSWER
a system used to constantly control the amount of radiation reaching the image receptor by terminating the length of exposure
Question 2.
What is the goal for an AEC
ANSWER
to produce constant levels of exposure
Question 3.
Radiation Detectors
ANSWER
radiation is transmitted through the patient and converted into an electrical signal, terminating the exposure time -older units are called phototimers
Question 4.
What are two types of AEC systems
ANSWER
-phototimers (old) -Ionization changer (new)
Question 5.
Phototimer AEC devices
ANSWER
use florescent screen and a device that converts a light to electricity
Question 6.
Photomultiplier (PM) tube
ANSWER
an electronic device that converts visible light energy into electrical energy
Question 7.
Photodiode
ANSWER
a solid-state device that preforms the same function
1/4
