Course book Advanced Treatment Planning 2018
Passive vs. active particle beam delivery
• Mono-energetic pencil beam scanning (PBS) is widely considered superior to passive techniques.
Planning exercise (single field): double scattering vs. IMPT
PBS - PROs
PBS - CONs
• less passive elements in the beam line • no patient customized passive elements
• penumbra
• (without mitigation strategies) less robust to organ motion
• reduced neutron dose
• superior dose distribution • less fields required
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