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.

Now Seeking ISRS Ambassadors

ISRS is excited to announce its new Ambassadors Program, open to ISRS Members who are interested in being recognized as formal advocates for ISRS in their respective regions. Listen to Dr. Arjun Sahgal describe this important new program and the opportunity it represents for our ISRS members, and make sure you apply before the 1^st December cutoff.

ISRS 2026 Congress registration is open!

May 31st – June 3rd, 2026
Sydney, Australia

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The latest news, education, and events.

New ISRS Intracranial Guidelines

November 2025 Publication

New international ISRS guidelines on radiosurgical treatment of severe, treatment-resistant OCD have been published in Neurosurgery.

Recent ISRS Intracranial Guidelines

October 2025 Publication

The latest ISRS practice guidelines on radiosurgery for recurrent high-grade glioma have been published in Neuro-Oncology.

New ISRS Ambassadors Program

Apply by 1st December

ISRS is excited to launch our new Ambassadors Program, inviting dedicated ISRS member advocates to help champion our society and share its mission. Together, we can expand our reach and strengthen the global ISRS community.

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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."