Radiation Safety Flashcards
1
Q
Alpha particles are ____ charged
A
Positively
1
Q
Beta particles are ____ charged
A
Negatively
2
Q
Gamma particles are ____ charged
A
Neutral (No charge)
3
Q
What is radioactive decay
A
When a source emits radiation in order to become more stable
4
Q
What is “activity”
A
The radioactive sources rate of decay
5
Q
What is half-life (T 1/2)
A
The time it takes for the activity to decay to half of its original value
6
Q
What is mean-life (T a)
A
The average lifetime decay
7
Q
Brachytherapy is also known as
A
“short distance therapy”
8
Q
Brachytherapy is commonly used for which treatment sites?
A
- uterus
- cervix
- lung
- prostate
- breasts
9
Q
What are characteristics of Brachytherapy?
A
- High doses are delivered near or within the tumor
- Sources typically have lower energies that have a rapid fall off
- Used to treat certain cancer internally
- Surrounding tissures recieve little to no dose
10
Q
What is an example of man made radiation?
A
Photon radiation
