December 16, 2011 — RaySearch Laboratories AB announces the first patient in Europe has been put on a treatment plan created with the company’s treatment planning system RayStation. The treatment was carried out at RISO, the Radiotherapeutic Institute in Deventer, the Netherlands. RISO is a public independent radiotherapeutic institute offering radiotherapy for multiple hospitals in the region. The patient is being treated for rectal cancer using intensity modulated radiation therapy (IMRT); the treatments are being delivered on an Elekta linear accelerator.
“RayStation is an entirely new system with a lot of interesting features and a modern workflow. We have now validated the system thoroughly and are very happy with the accuracy and the quality of the plans generated. The system is fast and easy to use and gives us the possibility to create high quality IMRT plans”, says Rik Westendorp, medical physicist at RISO.
“Earlier this fall the first treatment was carried out in the U.S. and now we pass the next important milestone when the system is used clinically in Europe as well,” says Johan Löf, CEO of RaySearch.
For more information: www.raysearchlabs.com
April 10, 2026 
