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 2025 CNS Summit?

In order to register and submit abstracts, you must first login to your ISRS account or create your ISRS profile.
If you’re not a member, join ISRS and receive a significant discount when registering.

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!

Save-the-dates for two inspiring ISRS events

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

Add to my calendar: Apple • Google • Office 365 • Outlook • Yahoo

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

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Learn. Share. Excel.

The latest news, education, and events.

New ISRS Guidelines

SBRT for non-spine bone mets: Meta-analysis and ISRS clinical practice guidelines

Important new ISRS guidelines are published in the Green Journal

Upcoming ISRS Webinars

Dr. Christopher P. Cifarelli 19th February and Dr. Arjun Sahgal 11th March

Learn from the experts: Adjuvant radiation in surgically resected brain mets with Dr. Cifarelli and Spine SBRT for spinal mets with Dr. Sahgal

ISRS 2025 CNS Summit

Learn, Share & Excel on 4th-5th June 2025

We welcome you at the 1st CNS Summit, an incredible educational opportunity taking place in beautiful Geneva, Switzerland

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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."