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Oliver Jäkel
Medical Physics
Fast beam delivery – state of the art in photon RT
Treatment of left sided breast cancer (reduction of heart dose)
• Delivery of 2Gy during 4 phases of breath-hold for < 10s
• Motion control via surface monitoring (Vision RT)
• Dose rates: 10 Gy /min
Normal breathing
Deep inspiration
breath-hold
Heart sparing effect
10-fold reduction
of RT related
deaths projected
FR Bartlett, JOVE 7/3 2014
Delivery in less than 1 breathing cycle / breath-hold means:
• mitigation of all motion related uncertainties to a minimum
• reduction of treated volume of normal tissue
• simplification of the planning and delivery
Development of very fast p-beam delivery needed