What is the purpose of using grids in fluoroscopy?

The purpose of using grids in fluoroscopy is primarily to remove scatter radiation. When X-rays pass through the body, many are absorbed by tissues, while others are scattered. This scattering can significantly degrade the quality of the image by adding unwanted density, which makes it difficult to visualize the structures of interest clearly.

Grids are designed to allow only the primary (non-scattered) X-rays to reach the image receptor while absorbing much of the scatter radiation. This enhances the contrast of the fluoroscopic images, leading to a clearer and more diagnostic-quality result. It is particularly beneficial in fluoroscopy where high image quality is necessary for accurate diagnoses.

The other options, while relevant to imaging, do not specifically pertain to the function of grids. For example, enhancing image brightness relates more to the settings of the fluoroscopy equipment or the imaging technique rather than to the grid’s role. Magnification is achieved through different technical means rather than through the use of grids, and increasing patient comfort is addressed through different aspects of the imaging process, such as positioning and equipment design, rather than the use of grids.