What does a crossed grid effectively clean up?

A crossed grid effectively cleans up scatter in both directions. In radiographic imaging, scatter radiation can degrade the quality of the images, and it usually occurs due to the interaction of the primary beam with matter, such as the patient's tissue.

A crossed grid consists of two sets of lead strips aligned in perpendicular directions—one set placed horizontally and the other vertically. This structure allows the grid to absorb scattered radiation that comes from multiple angles, thus improving image contrast and quality by selectively allowing primary radiation to pass while blocking scatter. By aligning the lead strips accordingly, the crossed grid is capable of minimizing scatter radiation that comes from varying directions, resulting in a cleaner, clearer image.

Understanding the function of a crossed grid emphasizes the importance of using appropriate equipment to enhance image quality during fluoroscopic procedures.