Radiotherapy Flashcards
1
Q
- Supplied from outside the body
- Given over several days or weeks with weekends off
- Motionless
- 5 mins per fraction
- Painless
A
External
2
Q
Stronium 89 is used for…
A
Bone cancers
3
Q
Iodine 131 is used for…
A
Thyroid gland cancers
4
Q
Radium 223 is used for…
A
Secondary bone cancers
5
Q
Stronium 89, Iondine 131 and Radium 223 are examples of…
A
Internal radiotherapy
6
Q
- Utilises radioactive implants placed inside the body
- Also known as brachytherapy
- Given once or a few times a day
- Involves short hospital stay
- Radioactive wires or seeds put into affected area
- Reducing contact with people may be necessary
A
Internal
7
Q
- Uses metal blocks to direct the beam
- Targets more closely the shape of the tumour
- Routinely used for prostate cancer
- Tiredness, N+V, sore skin, muscle and joint pain, infertility
- Higher does= higher risk of affecting normal cells
A
CRT
8
Q
- Increasing frequency of fractions more than 1 a day
- Given over 12 days not 4-6 weeks
- Total does is the same
- Requires a hospital stay
A
Hyperfractioned
9
Q
- Increase dose per fraction
- Lower frequency of fractions
- Overall reduction in amount of therapy used
A
Hypofractioned
10
Q
- Radiosurgery
- Treats tumours in head and benign conditions
- Patients receive one single large dose
- Used in patients who cant undergo surgery
- Not suitable for medium/ large tumours as exposure may damage nerves
A
Serotatic
11
Q
- Utilizes stream of proton particles
- Focus tightly on human compared to conventional therapy
- Good when tumour is in a sensitive area
A
Proton beam
