2092-2093 / 3107
Dose localization:
ability to deliver dose precisely and
accurately to a region of interest in the
patient target
(improve geometrical dose shaping )
Focus the dose on the target
(in space and time)
Target definition:
- Tumor delineation
- Organ Motion
- Organ filling
- Tumor shrinkage
Physics problem in RT
The interaction processes of each type of radiation determine
→
penetration in matter (how much radiation reaches a target)
→
the amount of dose deposited in the target (tissue)
→
Dose conformation around the target (dose to the OARs)
delivery technology – treatment planning - imaging
radiation physical properties
– technological inventions
Problem:
→
Identifying the target location at planning (depends on multimodality
imaging …)
→
ensuring that the target is geometrically linked correctly to the
beams throughout irradiation!