International Stereotactic Radiosurgery Society

A global community of experts who share a passion for Stereotactic Radiosurgery (SRS), Stereotactic Body Radiation Therapy (SBRT) and other focal therapies.

Interested in attending the ISRS 2026 Congress?

We are pleased to announce that the Congress website is now live. We look forward to welcoming you to Sydney!

ISRS 2026 Congress May 31st-June 3rd, 2026

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Save-the-dates for two inspiring ISRS events

ISRS 2025 CNS Summit
June 4th-5th, 2025

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ISRS 2026 Congress
May 31st-June 3rd, 2026

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We have listened to our members and sponsors who consistently tell us ISRS should have an annual presence in order to share scientific and clinical expertise in SRS, SBRT and related focal therapies more frequently. Beginning in 2025, you will have a chance to Learn, Share & Excel with ISRS on an annual basis. Save the dates now!

Learn. Share. Excel.

The latest news, education, and events.

Formal Endorsement of ISRS 2023 Guidelines

Endorsement by Ontario Health-Cancer Care Ontario is a landmark achievement for ISRS

ISRS 2023 Guidelines Informing the Management of Symptomatic Brain Radiation Necrosis after SRS now being implemented by OH-CCO

Upcoming ISRS Webinars

Dr. Terezakis 27th June and Dr. Dutta 18th July

Learn from the experts: Evolution of Radiation Treatment Paradigms in Adult and Pediatric Sarcomas with Dr. Terezakis and Optimizing Radiotherapy for Meningiomas: SRS, IMRT, and Proton Therapy with Dr. Dutta

ISRS 2026 Congress

Learn, Share & Excel on May 31st- June 3rd

We welcome you to the 17th Biennial Congress of the International Stereotactic Radiosurgery Society in Sydney, Australia

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"One of the values of a group like ISRS is that it's like minded individuals coming together, collaborating, sharing ideas. And a meeting like this every couple of years is very reinvigorating because you remember that other people are interested in the same things that you are. And we're all talking about the same types of topics. And it's really lovely to be able to do that in person instead of virtually. You don't get the same impact that you do when you're together as a group."