4.3.2 Applications

• What are the primary uses of radioactive emissions in medicine?

  Diagnostic and therapeutic
• In diagnostic uses, radioactive emissions are used for tracing and imaging
• What is the therapeutic use of radioactive emissions in medicine?

  Destroying cancerous cells
• Radioactive emissions can be used to understand the functioning of internal structures in the body.
• Match the medical use with its example:

  Diagnostic use ↔️ Technetium-99m for imaging organs

  Therapeutic use ↔️ Cobalt-60 for cancer treatment
• Which radioactive isotope is used to image the brain, bone, liver, and spleen?

  Technetium-99m
• Therapeutic uses of radioactive emissions involve destroying cancerous cells.
• Diagnostic uses of radioactive emissions involve treating diseases by destroying cancerous cells.

  False
• What is an example of a radioactive isotope used in diagnostic imaging?

  Technetium-99m
• Technetium-99m can be used to image the brain, bone, liver, and spleen.
• Match the medical use with its radioactive isotope:

  Diagnostic imaging ↔️ Technetium-99m

  Cancer treatment ↔️ Cobalt-60
• Radioactive emissions are used in industry for thickness control, industrial radiography, sterilization, and dating.
• What type of radioactive emitter is used in paper production to control thickness?

  Beta emitter
• Gamma emitters are used in industrial radiography to detect flaws in pipe welding.
• Gamma emitters are used in sterilization to kill microbes in medical equipment and food.
• Match the industrial use with its example:

  Thickness control ↔️ Beta emitters in paper

  Sterilization ↔️ Gamma emitters for syringes
• Which radioactive isotope is used in agriculture to trace nutrient uptake in plants?

  Phosphorus-32
• Cobalt-60 is used in pest control to sterilize fruit flies.
• What does a Technetium-99m scan detect in medical diagnostics?

  Heart problems
• Iodine-131 is used in medicine to treat thyroid cancer.
• Match the agricultural use with its example:

  Tracing nutrient uptake ↔️ Phosphorus-32 for fertilizer studies

  Pest control ↔️ Cobalt-60 for fruit fly control
• Which radioactive isotope is used in environmental studies to determine the age of geological formations?

  Uranium-238
• Tritium is used in environmental monitoring to study the movement of water.
• Strontium-90 is used to trace industrial waste and pollution.
• Order the steps in archaeological dating using Carbon-14:

  1️⃣ Organic material dies

  2️⃣ Carbon-14 begins to decay

  3️⃣ Measure the remaining Carbon-14

  4️⃣ Calculate the age of the material
• What principle is used in radiotracers to study biochemical pathways?

  Isotope tracing