CAMRT Radiography Practice Exam

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What is the grid conversion factor for a 5:1 grid?

No grid - 1
5 : 1 - 2
6 : 1 - 3
8 : 1 - 4

The correct answer is: 5 : 1 - 2

The grid conversion factor for a 5:1 grid is indeed 2. This factor is used in radiography to determine the amount of increase in the exposure required when using a grid compared to no grid. A 5:1 grid indicates a relatively low grid ratio, and the factor of 2 means that you would need to double the exposure (in terms of mAs) to maintain the same image density when using this particular grid. Understanding how grid ratios work is essential for radiographic procedures, as higher grid ratios typically require a greater increase in exposure due to the increased absorption of scatter radiation. In contrast to higher ratios, the 5:1 grid's conversion factor reflects its efficacy in improving image quality without requiring excessive adjustments to exposure settings.