In fluoroscopic imaging, how do grids improve image quality?

In fluoroscopic imaging, grids play a crucial role in enhancing image quality by absorbing scatter radiation. When X-rays are transmitted through the patient's body, some of the radiation interacts with body tissues and is scattered in different directions. This scattered radiation can degrade the quality of the image by adding noise and reducing contrast, making it harder to discern anatomical structures clearly.

Grids, which consist of a series of thin lead strips separated by radiolucent material, are positioned between the patient and the imaging receptor. They selectively allow the unscattered, primary X-rays to pass through while blocking a significant portion of the scattered radiation. As a result, the final image is clearer and has improved contrast, enabling better visualization of the structures of interest. This improves diagnostic accuracy and helps in better patient assessment.

Consequently, the correct choice highlights the primary function of grids in improving image quality through the minimization of scatter radiation.