Unit 2 Notes Flashcards
1
Q
Tg-71 defines calibration for monitor units as?
A
Unit of output to deliver I mu @ the depth of Dmax
W/ FS 10x10 & distance @ 100cm
2
Q
Increase in beam energy affects the PDD how?
A
More penetrating?
3
Q
How does an increase in beam energy affect Dmax?
A
Increase DMAX W/ increase beam energy
4
Q
Dmax of cobalt 60
A
0.5cm
5
Q
Dmax of 4MV
A
1.0cm
6
Q
Dmax of 6MV
A
1.5cm
7
Q
Dmax of 10 MV
A
2.5cm
8
Q
Dmax of 18MV
A
3.0 cm
9
Q
Increase FS affects PDD how?
A
Increase PDD
10
Q
How does the output change for a greater than 10cm FS
A
Decrease output
11
Q
How does an increase in SDD affect PDD?
A
Direct , increase pdd w/ increase SSD
12
Q
Question 15 homework
A
