Cyberknife Flashcards
1
Q
How far does the bed and couch move?
A
- gantry from 140-180
- bed moves in 6 angles
2
Q
What are the machine components?
A
- 6MV
- 1000 MU/min
- 0.3 to 0.8mm accuracy
3
Q
What is the treatment for 9 brain lesions?
A
- 15Gy in 1#
4
Q
What is the dose fall off of CK compared to SRS?
A
- CK: 10% per mm
- SRS: 10% per cm
5
Q
What is lung optimised treatment?
A
- robot can see the tumour from and locks onto it and follows it
- both the robot and staff need to see the tumour for treatment to comence
6
Q
How often does imaging occur?
A
- two images every 15 seconds
7
Q
What is the x-sight lung tracking treatment?
A
- 54Gy 3# alternate days
8
Q
What is required when not treating intracranial or x sight lung?
A
- fiducial placed in or next to tumour and used as a surrogate
9
Q
What is the treatment for prostate?
A
- 36.25Gy in 5# alternate days
- 195 beams
- 35 minute treatment
10
Q
What is the benefit of CK for prostate patients?
A
- close to no side effects
- due to high alpha/beta ratio hypofractionation provides better local control
11
Q
What is the treatment for liver?
A
- 45Gy in 3#
12
Q
What is the treatment for kidney?
A
- 39Gy in 3#
13
Q
What are the main sites treated with CK?
A
- brain
- prostate
- lung
- liver
- kidney
- pancreas
- rib
14
Q
What is the treatment for pancreas?
A
- 45Gy in 3#
15
Q
What is the treatment for rib?
A
- 12 Gy in 1#
