- Gamma rays are used in medical imaging techniques such as gamma scintigraphy and single-photon emission computed tomography (SPECT). These techniques involve injecting a radioactive tracer into the body and then using a gamma camera to detect and measure the emitted gamma rays. This allows doctors to visualize and diagnose various medical conditions, such as bone disorders, thyroid problems, and certain types of cancer.

2. Radiotherapy

- High-energy gamma rays are employed in radiotherapy, a treatment for various types of cancer. Gamma rays from sources like cobalt-60 or linear accelerators are precisely directed at tumors to kill cancer cells while minimizing damage to surrounding healthy tissues.

3. Sterilization of Medical Equipment

- Gamma rays possess strong penetrating power and can be used to effectively sterilize medical equipment and supplies. By exposing these items to gamma radiation, microorganisms, bacteria, and viruses on their surfaces can be eliminated, ensuring their sterility for safe medical use.

4. Food Preservation and Sterilization

- Gamma radiation is approved for use in certain countries as a method of food preservation. It can effectively eliminate harmful bacteria, fungi, and parasites from food products, extending their shelf life and ensuring their safety for consumption.

5. Industrial Radiography

- In industrial radiography, gamma rays are used to inspect and evaluate the internal structure of materials and objects. This technique, known as gamma radiography, is commonly employed in industries such as construction, manufacturing, and oil and gas. By passing a gamma ray beam through the object and capturing the resulting images, defects, cracks, or other hidden features can be identified.