Medical Uses of Radiation (OCR GCSE Physics A (Gateway Science Suite)): Flashcards
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Element commonly used as a medical tracer
Element commonly used as a medical tracer
Technetium
Half-life of Technetium
Half-life of Technetium
6 hours
Why Technetium's 6-hour half-life is ideal for imaging
Why Technetium's 6-hour half-life is ideal for imaging
Detected long enough but decays quickly to minimise exposure
What Technetium decays into
What Technetium decays into
Harmless isotope that body can safely excrete
What type of radiation does Technetium emit?
What type of radiation does Technetium emit?
Gamma radiation
Why gamma emission is effective for medical imaging
Why gamma emission is effective for medical imaging
Passes through body tissues without being absorbed
Type of radiation used in chemotherapy
Type of radiation used in chemotherapy
Gamma rays
Purpose of gamma rays in chemotherapy
Purpose of gamma rays in chemotherapy
Target and destroy cancerous cells
How gamma rays destroy cancer cells
How gamma rays destroy cancer cells
Cells absorb radiation, leading to their destruction
Side effect risk of gamma ray chemotherapy
Side effect risk of gamma ray chemotherapy
Can affect nearby healthy cells
Why chemotherapy can affect healthy cells
Why chemotherapy can affect healthy cells
Difficulty in targeting gamma rays precisely