Chapter 5 - Fractionated Radiation

Question 1

What are the three divisions of cell damage?

Answer 1

1) Lethal damage
2) Potentially lethal damage
3) Sublethal damage

Question 2

What is the difference between the three cell damages?

Answer 2

Lethal damage
- Cell will die no matter what

Potentially lethal damage
- The cell can survive if the environment is manipulated… like going to the hospital

Sublethal damage
- Will survive unless there are more sublethal damage

Question 3

What are the four “R”s of radiation therapy?

Answer 3

Repair
Reassortment
Repopulation
Reoxygenation

Question 4

A large shoulder of the survival curve correlates with what size of alpha/Beta raito?

Answer 4

Small

Question 5

What are the two types of brachytherapy?

Answer 5

Intracavitary -

Interstitial - in the tumor volume

Question 6

PLD (potentially lethal damage) can be repaired with what form of radiation?

Answer 6

x-rays —- not neutrons