Understanding Automatic Exposure Control

Define Automatic Exposure Control (AEC).

• AEC is a system that automatically adjusts the exposure time in radiography to achieve optimal image quality.

• AEC is a manual setting used to control the exposure time in radiography.

• AEC is a type of imaging technique that enhances contrast in radiographic images.

• AEC is a software tool used for image processing in radiography.

What is the consequence of using AEC inappropriately?

• It can lead to underexposure or overexposure of the radiographic image.

• It ensures consistent image quality regardless of patient size.

• It eliminates the need for radiographic technique adjustments.

• It reduces the radiation dose to the patient.

What is the purpose of using a grid in radiography?

• A grid increases patient exposure to radiation.

• A grid reduces scatter radiation, improving image contrast.

• A grid enhances the brightness of the image.

• A grid is used to measure the distance between the X-ray source and the film.

What is the function of a photomultiplier tube in AEC systems?

• It amplifies the radiation signal for better imaging.

• It detects the amount of radiation and sends a signal to terminate exposure.

• It converts radiation into visible light for display.

• It regulates the power supply to the imaging system.

What type of technique adjustment is usually required for destructive diseases in radiography?

• Increase

• No change

• Decrease

• Variable adjustment

What is the primary role of backup timers in Automatic Exposure Control (AEC) systems?

• To prevent excessive exposure

• To enhance image resolution

• To increase processing speed

• To reduce noise levels

Why is it important to understand patient factors in AEC settings?

• Patient factors can affect the exposure needed for optimal imaging.

• Patient factors are irrelevant in AEC settings.

• Patient factors only matter for patient comfort.

• Patient factors do not influence imaging quality.

Which factor should be decreased to eliminate motion in radiographic imaging?

• Time

• Distance

• Intensity

• Frequency

How does increasing kVp affect image quality in radiography?

• It decreases image contrast and increases patient dose.

• It enhances image contrast and reduces patient dose.

• It has no effect on image quality.

• It increases image noise and decreases patient dose.

What does SID stand for in radiography?

• Source-to-Image Distance

• Standard Imaging Device

• Systematic Image Distribution

• Single Image Display