Final answer:
Radioactive isotopes are used in PET scans to visualize body functions through radioactive emissions.
Explanation:
Radioactive isotopes are used in PET scans (positron emission tomography). PET scans utilize positron-emitting radioisotopes to create detailed images of the body's functions.
These isotopes are injected into the patient, and a PET scanner detects the gamma radiation emitted to generate images revealing organ activities.
Learn more about PET scans and radioactive isotopes here:
https://brainly.com/question/36992056
