With RayStation®*, your reirradiation workflow is simplified. Now with Plan + Prior treatment dose and optimization based on EQD2 for proton and light ions, the dose is automatically deformed to the new treatment image.
With the upcoming RayStation release*, RaySearch introduces enhanced support for reirradiation planning and evaluation. The new framework includes cumulative dose assessment based on deformable image registration and equieffective dose in 2 Gy fractions (EQD2). The framework enables ROI‑specific EQD2 parameters, including the modeling of partial tissue recovery between treatment courses.
Because reirradiation is fundamentally constrained by cumulative dose to organs at risk (OARs), particle therapy is particularly well suited for these scenarios. Its ability to reduce unnecessary dose to previously irradiated tissues helps mitigate the risk of severe toxicity, even in complex reirradiation cases. Reflecting this, RayStation supports reirradiation planning across modalities – including all currently supported delivery techniques for proton, helium, and carbon ion therapy – regardless of the modality used in prior treatments.
To further strengthen particle therapy in reirradiation, RayStation enables robust optimization of cumulative EQD2, allowing direct consideration of prior OAR doses in the optimization process. This can be combined with conventional robust optimization for the reirradiation target, accounting only for the dose contribution from the current plan. Together, these capabilities support a balanced and clinically relevant trade‑off between cumulative OAR doses and target coverage.
*This functionality is investigational, not CE‑marked or FDA‑cleared, and is not available for clinical use.
At PTCOG 64, industry experts have a platform to share insights, express innovative ideas, and engage in active discussions – where every voice counts in shaping the future of advanced cancer care.
Immerse yourself in the expertise-driven community with us. Engage with discussions and take inspiration from our Particle Therapy User Meeting, explore the latest advancements in our software, and connect over our shared mission of Waves of Innovation: Advancing Particle Therapy Together.
We are excited to bring together an expert-driven community of leading clinicians, physicists, and researchers to share knowledge, experience, and innovation in particle therapy.
Discover the latest developments in particle therapy, including:
Reach out to your RaySearch contact to register!
BIDIRECTIONAL CHAIR ROTATION FOR DELIVERY EFFICIENCY IN UPRIGHT STATIC ARCS (ID 269)
Wouter J. Van Weerelt - RaySearch Laboratories
Wouter is a Dutch PhD student in applied mathematics, working at RaySearch. As part of the UPLIFT Marie Skłodowska-Curie network, his research focus lies in optimization methods for upright radiotherapy. The aim of his research is to leverage the additional degrees to freedom available for upright treatments to improve treatment planning.
1820 - Physics: Treatment planning algorithm 04 (ID 109)
PHYSICS PARALLEL
Fri, 12.06.2026
15:25 - 15:35
Lexington
Join us during PTCOG 64 for a Normandy-style apéritif right after the day's program concludes. Enjoy local wines and canapés while connecting with industry peers and continuing the day's conversations in a relaxed atmoshphere.
Reach out to your RaySearch contact or stop by our booth to register.
At RaySearch, we believe that collaboration is the catalyst for innovation in cancer care. By partnering with industry leaders, we aim to create interoperable solutions that prioritize patient needs and empower healthcare providers with the tools they need.
We’re proud to continue our membership with UniteRT. If you haven’t heard of us, UniteRT is a collaboration of leading radiation therapy vendors that promotes open, vendor agnostic ecosystems.
At PTCOG, you’ll see that spirit in action on the floor of the congress hall. Because when the industry works together, clinics get more freedom, and patients benefit.
RAYSEARCH WEBINARS: ADVANCING REIRRADIATION SERIES
🔥Episode 1: Reirradiation in RayStation®: Planning with cumulative EQD2 in 3D
📅 16 June | 16:00 CEST
In this first episode, we will show how the upcoming RayStation® version supports evaluation and optimization of cumulative EQD2 for reirradiation planning, enabling a workflow aligned with recent clinical guidelines.
Presentations will be delivered by the team behind the functionality, together with clinical partners who have been closely engaged in its development:
✦ Jakob Ödén, Senior Research Engineer and Rasmus Bokrantz, Head of Algorithm Development from RaySearch Laboratories, will introduce the new reirradiation capabilities in the upcoming RayStation® version, including access of delivered dose from prior treatments, EQD2 accumulation across treatment courses with tissue-specific recovery factors, and plan evaluation and optimization on cumulative EQD2.
✦ Louise Murray, Associate Professor in Clinical Oncology, and Christopher Thompson, Principal Clinical Scientist from Leeds Teaching Hospital NHS Trust, will demonstrate the functionality on clinical reirradiation cases, showing how it supports clinical decision-making within a structured planning workflow.
A live Q&A will follow – bring your questions.
Join us from the very start.
