Explore the important and practical uses of radioactive isotopes
For this week’s discussion, we will explore the important and practical uses of radioactive isotopes. Although radiation often sounds harmful, many radioactive isotopes play essential roles in healthcare, research, industry, and environmental science.
A radioactive isotope (or radionuclide) is an atom with an unstable nucleus that releases energy in the form of alpha, beta, or gamma radiation. This source of radiation can be traced with a Geiger counter or other detection device (Britannica Editors, 2025). Nuclear medicine uses these isotopes for both diagnosis and treatment, including PET scans, SPECT scans, cancer therapy, and metabolic imaging. Radioactive isotopes are also widely used in industry, archaeology, food preservation, and environmental studies.
Choose a Radioactive Isotope
Select one isotope from the list below. You must pick a different isotope than your peers.
Examples of Radioactive Isotopes
Healthcare Isotopes
Industrial Isotopes
Environmental / Research Isotopes
Technetium-99m
Cobalt-60
Carbon-14
Iodine-131
Iridium-192
Radon-222
Fluorine-18
Americium-241
Tritium (Hydrogen-3)
Xenon-133
Cesium-137
Uranium-238
Answer ALL Required Questions with Complete Sentences
Your post must clearly address the following:
What type of radioactive decay does your isotope undergo?
Alpha, beta, gamma, positron emission, electron capture
Provide a simple explanation of what this means for your isotope
How is your isotope used?
Describe its application in healthcare, industry, archaeology, food safety, or environmental science
Be specific (What test? What treatment? What purpose?)
What protective measures are needed when handling or storing this isotope?
Examples include:
Lead shielding
Remote handling tools (tongs)
Radiation badges (dosimeters)
Lead-lined containers
Controlled access storage
Safety training
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