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First patient treatments delivered with RayStation and Hitachi proton therapy system at Sibely Memorial Hospital

Treatment planning system RayStation® from RaySearch has been used together with Hitachi’s latest proton therapy system to treat cancer patients at the newly opened John Hopkins Proton Center at Sibley Memorial Hospital in Washington, DC, USA.

The 80,000 square-foot facility, which opened October 1, houses cutting-edge proton therapy equipment from Hitachi alongside next-generation treatment planning software from RaySearch. Three rotating gantry treatment rooms and one fixed-beam research room at the center are equipped with a full suite of digital technologies for effective proton therapy planning. 

Proton therapy is a highly precise radiation treatment for tumors. It focuses more radiation on the tumor and less on the surrounding healthy tissue. This is particularly important for children, who may suffer lasting side effects from traditional cancer treatments. 

Hitachi offers an extensive variety of system configurations for cancer clinics, ranging from compact single room, expandable systems to multi-treatment room configurations in addition to multi-ion accelerating capabilities. RaySearch software, designed to maximize productivity and precision throughout the treatment planning process, will continue to support Hitachi equipment – including new delivery techniques planned for the coming years.

Johan Löf, founder and CEO, RaySearch, says: “RayStation has become the unrivalled leader in proton planning and therefore the natural choice for Johns Hopkins, one of the most advanced cancer centers in the world. We will closely follow the success of RayStation in enhancing the work of the clinic’s team of highly skilled medical experts.”

* Subject to regulatory clearance in some markets.


About Johns Hopkins National Proton Center 

The Johns Hopkins National Proton Center in Washington, D.C., is one of the largest and most advanced centers in the US. With three treatment rooms and more than 30 specialists, the center combines the unsurpassed expertise of the team, innovative technology and advancements in research to provide tailored cancer treatments for children and adults.

About RaySearch

RaySearch is a medical technology company that develops innovative software solutions to improve cancer care. The company markets the RayStation treatment planning system and RayCare®*, the next-generation oncology information system, worldwide. Over 2,600 clinics in more than 65 countries use RaySearch software to improve life and outcomes for patients. The company was founded in 2000 and the share has been listed on Nasdaq Stockholm since 2003.

About RayStation

RayStation is a flexible, innovative treatment planning system, chosen by many of the leading cancer centers worldwide. It combines unique features such as unmatched adaptive therapy capabilities, multi-criteria optimization, market-leading algorithms for IMRT and VMAT optimization with highly accurate dose engines for photon, electron, proton and carbon ion therapy. RayStation supports a wide range of treatment machines, providing one control center for all treatment planning needs and ensuring centers get greater value from existing equipment. RayStation also seamlessly integrates with RayCare, the next-generation oncology information system. By harmonizing the treatment planning, we enable better care for cancer patients worldwide.

More information about RaySearch is available at www.raysearchlabs.com

For further information, please contact:

Johan Löf, Founder and CEO, RaySearch Laboratories AB (publ) 

Telephone: +46 (0)8-510 530 00


Peter Thysell, CFO, RaySearch Laboratories AB (publ)

Telephone: +46 (0)70 661 05 59