AEC and Technique Systems

Front

What is the principle of Variable kVp systems?

Back

In Variable kVp systems, the kVp is increased or decreased by 2 for each 1 cm change in thickness.

Front

What effect does increasing the density setting have on receptor exposure?

Back

Increasing the density setting will increase the receptor exposure, assuming all other factors remain constant.

Front

What is required in Fixed kVp technique systems when part thickness changes?

Back

In Fixed kVp technique systems, the mAs must be halved or doubled for each 4 cm change in part thickness.

Front

Which technique chart is less effective at extreme part size measurements?

Back

The Variable kVp-fixed mAs technique chart is less effective at extreme part size measurements.

Front

If a patient measures 24cm for a chest X-ray, what kVp and mAs should be used with a variable kVp technique chart?

Back

You should use 76 kVp and 4 mAs.

Front

What is the formula for adjusting kVp in Variable kVp systems?

Back

The formula is to increase or decrease kVp by 2 for each 1 cm change in thickness.

Front

What does AEC stand for in radiography?

Back

AEC stands for Automatic Exposure Control.

Front

What is the purpose of a technique chart in radiography?

Back

A technique chart provides guidelines for selecting appropriate exposure settings based on patient size and body part.

Front

How does mAs affect image density?

Back

Increasing mAs increases image density, resulting in a darker image, while decreasing mAs decreases image density.

Front

What is the relationship between kVp and image contrast?

Back

Higher kVp results in lower image contrast, while lower kVp results in higher image contrast.