Fast optimization and dose calculation in scanned ion beam therapy

Gating for scanned ion beam therapy

In treatment of motion affected tumours by means of a scanned particle beam severe under and over dosage can occur due to the interplay effect. By using gated beam delivery effective target motion is reduced, but even for the residual motion the interplay effect can lead to unsatisfactory dose distributions. Furthermore, an appropriate motion monitoring system is essential since beam delivery h...

Scanned Ion Beam Therapy of Moving Targets with Beam Tracking

Management of organ motion in scanned ion beam therapy

Scanned ion beam therapy has special demands for treatment of intra-fractionally moving tumors such as lesions in lung or liver. Interplay effects between beam and organ motion can in those settings lead to under-dosage of the target volume. Dedicated treatment techniques such as gating or abdominal compression are required. In addition 4D treatment planning should be used to determine strategi...

Real-time dose compensation methods for scanned ion beam therapy of moving tumors

Fast Pencil Beam Dose Calculation for Proton Therapy Using a Double-Gaussian Beam Model

The highly conformal dose distributions produced by scanned proton pencil beams (PBs) are more sensitive to motion and anatomical changes than those produced by conventional radiotherapy. The ability to calculate the dose in real-time as it is being delivered would enable, for example, online dose monitoring, and is therefore highly desirable. We have previously described an implementation of a...