What relationship exists between grid ratio and scattered radiation absorption?

The relationship between grid ratio and scattered radiation absorption is directly proportional. A higher grid ratio indicates that the grid has a greater height of lead strips relative to the distance between them. This design enhances the ability of the grid to absorb more scattered radiation while allowing primary radiation to pass through.

As the grid ratio increases, the grid is more effective at preventing scattered radiation from reaching the detector. Scattered radiation can degrade image quality, and by having a grid with a higher ratio, more of this unwanted scatter is absorbed. Consequently, a higher grid ratio contributes to improved image contrast and clarity since it selectively allows the primary X-ray beams, which carry the relevant diagnostic information, to reach the imaging receptor while blocking a greater amount of scattered rays. This results in sharper and more diagnostic images.

The other options do not accurately reflect how grid ratios function, as higher ratios are specifically designed to maximize the absorption of scatter, contrary to the suggestions in those alternatives.