Question on: SS1 Physics - Atomic Structure and Radioactivity

Radioisotopes have significant applications in medicine. In diagnostic imaging, radioisotopes are used to visualise organs, tissues, and physiological processes inside the body. For example, technetium-99m is commonly used in nuclear medicine scans to diagnose heart conditions, bone disorders, and certain cancers. It emits gamma radiation, which can be detected by specialised imaging devices.

In cancer treatment, radioisotopes are utilised in a process called radiation therapy. High-energy radiation. This targeted radiation damages the DNA of the cancer cells, preventing them from dividing and growing. Radioisotope-based brachytherapy is another technique where radioactive sources are placed directly inside the body near the tumour site.