550-551 / 2605
Conventinal fractionation
(dose/fraction: 1.8 – 2 Gy)
Frac%ona%on in radiotherapy
Hypofractionation
(particle therapy)
- doses of 2.5 Gy and above
Stereotactic radiosurgery (SRS)
- entire dose is given in a single fraction
- extreme examples of SBRT (ablative doses of RT)
Stereotactic body radiation therapy (SBRT)
- treatment of tumors with 1 to 8 dose fractions (dose/fraction > 2.5)
Hyperfractionation
(dose/fraction: > 1.8, accelerated)