What is the primary purpose of using a grid in fluoroscopy?

The primary purpose of using a grid in fluoroscopy is to reduce scatter radiation. When x-rays pass through the body, some of them are scattered due to interaction with tissues. Scatter radiation can degrade the quality of the images produced during fluoroscopy, leading to decreased diagnostic efficacy.

The grid, typically made of thin lead strips, is placed between the patient and the image receptor. It allows the primary x-ray beam to pass through while absorbing much of the scattered radiation that arises from the patient. By minimizing scatter, the grid improves the contrast and overall quality of the images, making it easier for healthcare providers to interpret them accurately.

This use of a grid is particularly important in fluoroscopy because the procedures often involve imaging of complex anatomical structures, where clear and precise images are crucial for diagnosis and treatment.