What is the function of a grid in radiographic imaging?

The function of a grid in radiographic imaging is to reduce scatter radiation that reaches the image receptor. When X-rays pass through the body, some of them are scattered as they encounter different tissues and structures. This scatter can degrade the quality of the image by adding unwanted noise and reducing contrast. By utilizing a grid, which is typically made up of a series of lead strips, the technique effectively absorbs much of this scatter radiation.

Only the primary, more direct X-ray beams that contribute to forming a clearer image are allowed to reach the image receptor. This results in an improved contrast and clarity of the radiographic image, making it easier to identify and diagnose conditions accurately. The grid is a critical component in ensuring that medical professionals have access to high-quality imaging for evaluation and treatment planning.