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4D dose calculations at PSI - current status and ongoing work - GSI

4D dose calculations at PSI - current status and ongoing work - GSI

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Rescanning – next steps<br />

- Real p<strong>at</strong>ient geometries<br />

- Implement iso-layered rescanning (Zenklusen et al.) in tre<strong>at</strong>ment<br />

planning<br />

(huge effect on scanning p<strong>at</strong>tern resulting in de-phasing of beam<br />

scanning <strong>and</strong> target motion, dead-time / beam-on time r<strong>at</strong>io better)<br />

- <strong>4D</strong> plan optimiz<strong>at</strong>ion (beam weights, not relying on 3D plan)<br />

<strong>4D</strong> <strong>work</strong>shop Dirk Boye, December 10 th

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