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Triple Physics
Radiation in Medicine
Question | Answer |
---|---|
How is visible light used for diagnosis | Endoscopes |
How are X-Rays used for diagnosis | X-ray photography & CAT scanners |
How are gamma rays used for diagnosis | PET scanners |
How is Ultra-sound used for diagnosis | Ultra-sound scanners |
Why are some types radiation ionising? | They create reactive ions in the body which can be dangerous |
Which of radiation can be used to damage and destroy cancer cells? | Gamma-Rays & X-rays |
How can types of non-ionising radiation be used in treatments? | Lasers can be used in eye surgery and absorption of ultra-sounds can be used to treat swollen tissues ( Visible Light & Ultra-sound) |
What happens to the intensity of radiation as it moves further away from the source? | It decreases |
What other factor is intensity affected by? | The medium that the radiation is travelling through |
How do you calculate intensity? | Intensity = Power of incident radiation/area |
What is the unit of intensity? | Watts per square metre(W/m^2) |