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 Active 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.

Interested in attending the ISRS 2026 Congress?

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

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The latest news, education, and events.

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.

New ISRS Intracranial Guidelines

August 2025 Publication

Important new ISRS guidelines on radiosurgical management of cavernous sinus hemangioma have been published in the Red Journal.

ISRS Announces First SBRT Certified Center

Tuen Mun Hospital, Hong Kong

ISRS is proud to announce its first SBRT Certified Center — Tuen Mun Hospital. Already SRS certified in February, the dedicated team has now successfully achieved SBRT certification, marking a significant milestone in high-precision radiotherapy. Congratulations to the team for their continued excellence and commitment to advancing patient care!

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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."