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Triple Physics

Radiation in Medicine

QuestionAnswer
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)
Created by: JuliaNorton
 

 



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