Use of radioactive implants (AQA A-Level Physics): Flashcards
📚Flashcards
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Practise the cards
10 cards from this deck
Type of radiation in radioactive implants
Type of radiation in radioactive implants
Beta radiation
Location of radioactive implants
Location of radioactive implants
Next to or inside the tumour
Why beta radiation is chosen for implants
Why beta radiation is chosen for implants
Ionising properties and limited penetration depth
Effect of limited penetration of beta particles
Effect of limited penetration of beta particles
Minimises impact on surrounding healthy tissue
What ionisation from beta radiation does to cells
What ionisation from beta radiation does to cells
Kills or damages cells at impact site
Effect on healthy cells further from implant
Effect on healthy cells further from implant
Remain largely undamaged
Commonly used isotope for radioactive implants
Commonly used isotope for radioactive implants
Iridium-
Half-life of Iridium-
Half-life of Iridium-
days
Advantage of implants vs external beam radiotherapy
Advantage of implants vs external beam radiotherapy
Higher doses to smaller specific areas
Key benefit of localised implant treatment
Key benefit of localised implant treatment
Reduces damage to surrounding healthy cells