Which Statement About Grids Is Most Accurate

question 35

Multiple Choice

Which statement about grids is most accurate?

• A) The grid is installed on the patient side of the tube head to minimize scatter and to collimate the beam.
• B) A grid is unnecessary when taking a radiographic image of areas less than 30 cm thick.
• C) When using a grid, it is necessary to increase the mA, sometimes by up to six times.
• D) The grid improves penetrance and radiographic detail by redirecting the x-rays so that they strike the film perpendicularly.

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Definitions:

Profit-maximizing Output

The level of production at which a firm can achieve the highest possible profit, given its cost structure and the price of its products or services.

Fixed Cost

Costs that do not change with the level of output produced, such as rent or salaries.

Lawn-mowing

The process of cutting or trimming the grass in a yard or field to maintain a neat and uniform appearance.

Variable Costs

Expenses that change in proportion to the amount of goods or services produced, like labor and materials.