Understanding Automatic Exposure Control

What is the primary purpose of Automatic Exposure Control (AEC) in radiography?

• To enhance image contrast

• To automatically adjust the exposure time

• To increase the resolution of the image

• To reduce the size of the X-ray machine

Which of the following is the first type of AEC system used in radiography?

• Ionization Chamber

• Phototimer

• Digital AEC

• Manual AEC

How does AEC contribute to image quality in radiography?

• By increasing the sharpness of the image

• By ensuring consistent image density

• By reducing the noise in the image

• By enhancing the color of the image

Which factor can affect the performance of an AEC system?

• The detector not being completely superimposed by the anatomy of interest

• The thickness of the body part being imaged

• The brand of the X-ray machine

• The time of day the X-ray is taken

Tags

NGSS.HS-PS4-5

In which clinical application is AEC particularly useful?

• Dental X-rays

• Chest radiography

• MRI scans

• Ultrasound imaging

Tags

NGSS.HS-PS2-5

What is a limitation of AEC technology in radiography?

• It cannot be used with digital imaging

• It requires manual adjustment for every patient

• It may not function properly with very small body parts

• It increases the radiation dose to the patient

What principle does AEC rely on to terminate the exposure?

• The amount of light detected

• The time elapsed during exposure

• The electrical resistance of the detector

• The amount of radiation reaching the detector

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-5

What is inside the ionization chambers?

• Photodiode

• Air

• Liquid

• Barium Fluro halide crystals

How does AEC affect patient safety in radiography?

• By increasing the radiation dose

• By reducing the need for repeat exposures

• By eliminating the need for protective gear

• By shortening the examination time

What is a common challenge when using AEC with pediatric patients?

• The system is too advanced for pediatric use

• The small size of the patient may lead to the exposure being terminated too soon.

• The system cannot detect pediatric anatomy

• The system requires a different power source