207_Combined course Presentations

Fractionation sensitivity

Early reacting normal tissues

Late reacting normal tissues

• Low fractionation

• High fractionation

sensitivity

sensitivity

• Small increase in

• Large increase in

tolerance with decreasing

tolerance with decreasing

dose per fraction

dose per fraction

• High alpha-beta (8-30 Gy)

• Low alpha-beta (2-4 Gy)

• Time factor (repopulation)

• No time factor