How is grid ratio defined?

The grid ratio is defined as the height of the lead strips in the grid divided by the distance between those strips. This measurement is crucial in radiography as it determines the effectiveness of the grid in reducing scatter radiation that reaches the imaging receptor. A higher grid ratio indicates a greater ability to absorb scatter, which can enhance image quality by producing clearer contrast. In this context, the formula "H/D" accurately represents grid ratio, where "H" stands for the height of the lead strips and "D" for the distance between them. Understanding grid ratio is essential for radiologic technologists when choosing the appropriate grid to optimize diagnostic imaging results.