Grid Frequency Quiz

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Questions and Answers

Which of the following is true about grid frequency?

Lower frequency requires more X-ray photons to produce an image
Higher frequency results in finer grid lines and less interference with the image (correct)
Lower frequency grids are recommended for mobile radiography
Higher frequency results in a lower dose for the patient

What is the relationship between grid ratio and scatter radiation?

Grid ratio has no effect on scatter radiation
The higher the ratio, the more scatter radiation is produced
The higher the ratio, the more scatter radiation is absorbed (correct)
The lower the ratio, the more scatter radiation is absorbed

What is the difference between parallel and focused grids?

Parallel grids are more effective at reducing scatter radiation
Focused grids are less critical to beam centering
Parallel grids are less critical to beam centering, but should not be used at distances less than 48 inches (correct)
Focused grids should not be used at distances less than 48 inches

What is the purpose of collimation in radiography?

<p>Reducing the area of irradiation and the volume of tissue in which scatter can be created (C)</p> Signup and view all the answers

What is the purpose of postexposure image manipulation known as shuttering?

<p>Adding a black background around the original collimation edges to eliminate distracting white or clear areas (D)</p> Signup and view all the answers