The document discusses different uses of radiation and radioactive isotopes. It explains that X-rays use electromagnetic radiation to create images of bone structures. It then lists specific radioactive isotopes and their medical uses, such as sodium-24 detecting water leaks and thallium-201 locating damaged heart muscles. Positron emission tomography (PET) scans use radioactive isotopes to detect and evaluate cancer cells. The document also discusses how radiotherapy uses high-energy radiation to kill cancer cells, eliminating their ability to reproduce. Finally, it defines isotopes as atoms that have additional neutrons, making them potentially unstable.

1. Radiation
By Z,R,L

2. X-rays
• The radiation used in X-rays is a type
of electromagnetic radiation
• X-rays can go through flesh, but not
bones, meaning that they can be used
to show images of bone structures for
medical uses.

3. Uses of Radioactive Isotope
• Sodium 24- Can highlight leakages in
water pipes.
• Manganese 54- Can be used to detect
behaviour of heavy metals.
• Thallium 201- Used to locate damaged
heart muscles.
• Americium 241- Used in domestic
smoke detectors.

4. Use of Radioactive Isotope
detection (PET)
• PET scans offer a way to detect and
evaluate cancer cells.
• It is usually administered by injection.

5. Cure (cancer)
• Radiotherapy is used to treat about
50-60% of people with cancer.
• Radiotherapy is the use of high-energy
radiation to kill dangerous cells, for
example cancer cells.
• Radiation therapy works because it
eliminates the cells ability to
reproduce, killing the disease.

6. What are Isotopes?
• Isotopes are the additional neutron in
an atom.
• For example, in Lithium.
Lithium has an
atomic number
of 3, however it
has a mass
number of 7,
telling us that
there is four
neutrons, one
additional than
protons.
This additional
neutron can
cause the
atom to be
reactive and
unstable.

7. What are Isotopes?
• Isotopes are the additional neutron in
an atom.
• For example, in Lithium.
Lithium has an
atomic number
of 3, however it
has a mass
number of 7,
telling us that
there is four
neutrons, one
additional than
protons.
This additional
neutron can
cause the
atom to be
reactive and
unstable.