What is the significance of contrast media in radiography?

The significance of contrast media in radiography primarily lies in their ability to enhance the visibility of specific organs or tissues. Contrast media are substances administered to a patient to improve the contrast of structures or fluids within the body in medical imaging. By altering the way x-rays are absorbed or transmitted through different tissues, contrast media allow radiologists to differentiate between normal and abnormal findings more effectively.

For instance, in procedures like CT scans or fluoroscopy, contrast agents can highlight vascular structures, gastrointestinal tract, or other specific organs that might otherwise be difficult to visualize clearly. This enhanced visibility aids in diagnosing conditions, evaluating organ functionality, and planning treatments.

The other options do not accurately describe the role of contrast media: they do not make images blurrier, nor do they reduce contrast in radiographic images. Additionally, they are not limited to use in MRI scans, as they are widely used in a variety of imaging modalities including x-rays, CT scans, and fluoroscopy.