Random Questions Flashcards
1
Q
Sources of secondary radiation are
A
Patient scatter
Collimator scatter
Leakage radiation
2
Q
Dose depression in medium is affected by
A
Attenuation
ISL
Scatter within the medium
3
Q
Primary beam is affected by
A
Attenuation and ISL
4
Q
The output of a machine can also be called
A
Dose rate
5
Q
Given dose is
A
Dose at dmax and called applied dose
6
Q
You can calculate treatment time with
A
Given dose and MADR
7
Q
Which machine has constant dose rate
A
Cobalt
8
Q
What are the terms to describe Dmax
A
Given dose
Applied dose
Maximum dose
9
Q
PDD is only used for SDD set up?
A
True
10
Q
Use of POP fields is not recommended as beam energy ________ and patient thinkness _________
A
Decreases
Increases
