What does radiopaque mean in the context of a contrast media?

In the context of contrast media, the term "radiopaque" refers to substances that are visible under X-ray imaging. Radiopaque materials do not allow X-rays to pass through them easily, causing them to appear white or light on X-ray images. This characteristic is essential in medical imaging, as it helps delineate structures within the body, enabling clearer visualization of organs, tissues, and potential abnormalities.

For example, when a radiopaque contrast medium is used in procedures like fluoroscopy or CT scans, it enhances the contrast of the images, allowing healthcare providers to observe detailed anatomical features or conditions that would otherwise be difficult to identify. This visibility is crucial for accurate diagnosis and treatment planning.