Hazards & Uses of Radioactive Emissions & of Background Radiation (AQA GCSE Physics): Flashcards
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Practise the cards
12 cards from this deck
Two medical uses of nuclear radiation
Two medical uses of nuclear radiation
Exploring organs & treating cancer
What medical tracers contain
What medical tracers contain
Radioactive isotopes
Type of radiation medical tracers usually emit
Type of radiation medical tracers usually emit
Gamma rays
Why tracer half-life must be carefully chosen
Why tracer half-life must be carefully chosen
Long enough for scan, short enough to decay after
Ways medical tracers enter the body
Ways medical tracers enter the body
Eaten, drunk, or injected
What FDG is
What FDG is
Radioactive form of glucose
Two methods for internal radioactive cancer treatment
Two methods for internal radioactive cancer treatment
Injection or ingestion
Radiation types used for internal cancer treatment
Radiation types used for internal cancer treatment
Beta or gamma-emitting isotopes
What Iodine-131 treats
What Iodine-131 treats
Thyroid cancer
How external gamma ray beams are positioned
How external gamma ray beams are positioned
From different positions around the patient
Why external treatment uses multiple beam positions
Why external treatment uses multiple beam positions
Reduces radiation to healthy tissue, full dose to tumour
Why gamma rays are used for external cancer treatment
Why gamma rays are used for external cancer treatment
They penetrate deeper than alpha & beta particles