Use of high energy X-rays (AQA A-Level Physics): Flashcards
📚Flashcards
Practise the cards
10 cards from this deck
ShowHide
Practise the cards
10 cards from this deck
Medical use of high-energy X-rays
Medical use of high-energy X-rays
Radiotherapy to destroy malignant cells
Type of radiation X-rays are
Type of radiation X-rays are
Ionising radiation
How to locate tumour before radiotherapy
How to locate tumour before radiotherapy
Scans (e.g., CT or MRI)
Energy level for deep vs surface tumours
Energy level for deep vs surface tumours
Higher energy for deep, lower for surface tumours
Shielding material to protect healthy tissue
Shielding material to protect healthy tissue
Lead
Why collimate X-ray beams in radiotherapy
Why collimate X-ray beams in radiotherapy
Narrow and focus radiation on tumour, reduce scatter
Describe multiple beam technique
Describe multiple beam technique
Beams from different angles converge on tumour
Describe rotating beam method
Describe rotating beam method
X-ray source rotates around patient with tumour at centre
Name for rotating beam radiotherapy technique
Name for rotating beam radiotherapy technique
Isocentric technique
How does ionising radiation kill cells
How does ionising radiation kill cells
Can damage or kill cells by ionising atoms