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Page 15
Oliver Jäkel
Medical Physics
Light ion RT has always been IGRT
Michael Goitein using orthogonal x-rays
to position a patient at the Harvard
Cyclotron facility in Boston in the 1970’s
Image guidance in light ion RT
Unfortunately, 40 years
later, we’re still doing it
more or less the same way
Page 16
Oliver Jäkel
Medical Physics
Motion mitigation techniques
New Delivery techniques:
• Gating
• Fast rescanning
• Tracking, Gated retracking, …
• Simulated scattering
• Very fast delivery
Gantry 2 at PSI
Only recently manufacturers offer CBCT
Image guided p-RT (lacking behind)
• Cone beam CT
• CT on rails
• Ultrasound guidance
• Optical systems
• MR guidance
4D Treatment Planning strategies:
• Calculate accumulated dose
• Optimize treatment parameters
• Robust optimization
M. Bangert, PMB 2013