Breaking ground in online adaptive radiotherapy (OART)
RaySearch is proud to announce that online adaptive has been unleashed by software and is now part of clinical practice – built on existing linac platforms. A recent milestone is the first patients treated using an online adaptive workflow with RayStation, RayCare, and a Varian TrueBeam** at Iridium Network in Belgium. Read the press release. Iridium will also present this achievement at RaySearch’s lunch symposium “Online adaptive for the masses” on Sunday, May 17.

OART means adapting the treatment plan to the patient’s anatomy while the patient is on the treatment couch. This is a major topic in the industry and RaySearch’s software‑driven approach speeds up the process and puts clinics in control. RayStation enables fast, predictable adaptive replanning, while RayCare connects imaging, planning, adaptation, and treatment into a single, vendor‑neutral workflow platform that is built for automation.

Other highlights
In addition to online adaptive workflows, RaySearch will have a strong and multifaceted presence throughout ESTRO 2026. The company will host live demonstrations of its state-of-the-art products and solutions, facilitate expert discussions at the dedicated in-booth space (RayHub), and a lunch symposium led by its founder and CEO, Johan Löf, along with clinical customers. RaySearch will also contribute with scientific presentations and continue its engagement in UniteRT (www.unitert.org), reinforcing its commitment to open, vendor‑agnostic ecosystems that support collaboration, choice, and innovation in radiotherapy.

To learn more about what technologies RaySearch will have on show and other on‑site activities, visit the company’s event landing page at: www.raysearchlabs.com/estro-2026

Demonstrations are booked at the onsite booth #C14:45 or on the RaySearch website.

“I have been engaged in adaptive radiation therapy since defending my doctoral thesis on the subject,” says Johan Löf, founder and CEO of RaySearch. “Online adaptive does not require specialized treatment machines; it is entirely a matter of advanced software. Clinics now have the opportunity to implement online adaptive without having to replace their linear accelerator.”

For more information, please contact:
Matt Miley, Head of Marketing, RaySearch Laboratories AB
Tel: +46 (0) 8 510 530 00
marketing@raysearchlabs.com

Carolina Strömlid, Head of Investor Relations, RaySearch Laboratories AB 
Tel: +46 (0) 708 807 173
ir@raysearchlabs.com 

About RaySearch
RaySearch Laboratories AB (publ) is a medical technology company that develops innovative software solutions for improved cancer treatment. RaySearch markets the RayStation®* treatment planning system (TPS) and the oncology information system (OIS) RayCare®*. The most recent additions to the RaySearch product line are RayIntelligence® and RayCommand®*. RayIntelligence is an oncology analytics system (OAS) which enables cancer clinics to collect, structure and analyze data. RayCommand, a treatment control system (TCS), is designed to link the treatment machine and the treatment planning and oncology information systems. RaySearch’s software has been sold to over 1,100 clinics in 47 countries. The company was founded in 2000 as a spin-off from the Karolinska Institute in Stockholm and the share has been listed on Nasdaq Stockholm since 2003 (STO: RAY B). More information is available at raysearchlabs.com.

*Subject to regulatory clearance in some markets.
** Varian and TrueBeam are trademarks owned by Varian Medical Systems, Inc., a Siemens Healthineers Company.
Online Adaptive radiotherapy functionality is not cleared or approved for sale or clinical use in the United States or Canada. Availability in other markets is subject to applicable regulatory approvals and varies by region.

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