What is the primary function of a grid in radiography?

The primary function of a grid in radiography is to reduce scatter radiation and improve image contrast. In the process of taking X-rays, scattered photons can distort the image by adding unwanted density and reducing the overall clarity. Grids are designed to absorb this scattered radiation while allowing the primary X-ray beam to pass through. By using a grid, radiographers can enhance the quality of the images obtained, resulting in clearer and more diagnostically useful radiographs. This is particularly important for imaging areas of the body that are dense or have a lot of overlying tissue, as scatter radiation can significantly compromise the quality of the image.