Radiotherapy (Edexcel GCSE Physics Combined Science): Flashcards
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Radiotherapy definition
Radiotherapy definition
Using radiation to kill cancer cells
Two types of radiotherapy
Two types of radiotherapy
Internal radiation therapy and external radiation therapy
Goal of radiotherapy
Goal of radiotherapy
Damage cancer cells while limiting harm to healthy cells
Internal radiation therapy method
Internal radiation therapy method
Placing radioactive material inside the body
Alpha radiation ionisation property
Alpha radiation ionisation property
Strongly ionising
Alpha particles range
Alpha particles range
Short range, only affects nearby tissue
Beta particles range vs alpha
Beta particles range vs alpha
Beta particles can travel further than alpha
Beta particles penetration ability
Beta particles penetration ability
Can penetrate through the casing of the implant
Radiation type in external therapy
Radiation type in external therapy
Gamma rays
Why gamma rays used externally
Why gamma rays used externally
Can penetrate deep into the body
Unavoidable effect of external therapy
Unavoidable effect of external therapy
Some harm to surrounding tissues
Purpose of shielding in radiotherapy
Purpose of shielding in radiotherapy
Protect healthy areas from radiation exposure
Operator protection in radiotherapy
Operator protection in radiotherapy
Machines have shielding to protect operators
External therapy machine location
External therapy machine location
Kept in designated room to minimize exposure