What are radiotracers used for?

Radiotracers are specialized compounds that are used primarily for diagnostic purposes in nuclear imaging techniques, such as Nuclear Scintigraphy. These radionuclides are radioactive substances that emit gamma rays, which can be detected by imaging equipment to assess various physiological processes within the body. By introducing a radiotracer into the body, healthcare providers can visualize organ function, detect abnormalities, and evaluate diseases. This is particularly useful in oncology, cardiology, and other medical fields where understanding the biological activity of tissues is critical for accurate diagnosis and treatment planning.

The other options, while related to imaging techniques, do not accurately describe the specific role of radiotracers. Standard x-ray imaging relies on different technologies and does not utilize radiotracers. Enhancing image contrast is typically achieved through the use of contrast agents in various imaging modalities, rather than through the use of radiotracers. Similarly, improving film hardness pertains to the physical properties of imaging film, rather than the biochemical function of radiotracers. Thus, the use of radiotracers in diagnostic imaging is a unique and essential aspect of nuclear medicine.