A predictive algorithm for spot position corrections after fast energy switching in proton pencil beam scanning
Medical Physics2018Vol. 45(11), pp. 4806–4815
Citations Over TimeTop 21% of 2018 papers
Abstract
We developed a spot position correction for PSI Gantry 2 which reduces the beam off time needed in current state-of-the-art gantries to settle the magnetic fields in the bending magnets. Thanks to this correction, the spot position is stable within 100 ms of an energy change at Gantry 2. This is low enough to make possible efficient use of motion mitigation techniques.
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