International Stereotactic Radiosurgery Society

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The ISRS webinar series began in 2016. We have already delivered over 60 webinars on intracranial and body SRS and from experts around around the world.

A video replay of each past webinar is available to ISRS members.

Next Webinars

August 23, 2019

Modern Stereotactic Radiosurgical Strategies for Vestibular Schwannomas by Chung Ping YU, MD, Professor

1:00 pm (Dublin, Edinburgh, Lisbon, London) - 2:00 pm CET (Amsterdam, Berlin, Bern, Paris, Rome, Stockholm, Vienna) - 8:00 am (Eastern time - New York, Canada) - 9:00 am (Brasilia) - 9:00 pm (Tokyo) - 5:00 am (Pacific time - Los Angeles) - 10:00 pm (Brisbane)

We use Koos classification to guide treatment strategies for sporadic vestibular schwannomas (VS). Koos 1 to 2 tumors with no demonstrable growth will be observed with yearly MRI plus volumetric measurement. Koos 1 to 2 VS with growth and 3 VS are best treated by single fraction SRS with rigid frame fixation. We advocate combined microsurgery + SRS for Koos 4 VS to provide best functional outcome and long term tumor control. Hypofractionation SRS is an evolving option in selected cases, especially for medial type of facial nerve schwannomas mimicking VS.

September 10, 2019

Patient Immobilisation for Stereotactic Treatment by Peter FILATOV, PhD, Medical Physicist

1:00 pm (Dublin, Edinburgh, Lisbon, London) - 2:00 pm CET (Amsterdam, Berlin, Bern, Paris, Rome, Stockholm, Vienna) - 8:00 am (Eastern time - New York, Canada) - 9:00 am (Brasilia) - 9:00 pm (Tokyo) - 5:00 am (Pacific time - Los Angeles) - 10:00 pm (Brisbane)

Precise target localisation is one of the crucial part of the stereotactic treatment. The way to achieve this accuracy changed from rigid fixation and complex immobilisation devices to real time tracking and focusing on patient comfort and the speed of the treatment. In this webinar current approaches to patient immobilisation for intracranial and extracranial stereotactic treatment  will be presented. Limitations of current practises will be analysed and described. We will also discuss the future trends in patient positioning on the treatment and online target tracking. 

October 01, 2019

SRT for Cancers of Digestive System by Alexandr PANKRATOV, MD, Professor

1:00 pm (Dublin, Edinburgh, Lisbon, London) - 2:00 pm CET (Amsterdam, Berlin, Bern, Paris, Rome, Stockholm, Vienna) - 8:00 am (Eastern time - New York, Canada) - 9:00 am (Brasilia) - 9:00 pm (Tokyo) - 5:00 am (Pacific time - Los Angeles) - 10:00 pm (Brisbane)

The effectiveness of radiation therapy for esophageal cancer is still insufficient. Why? The role of radiation therapy for gastric cancer is often in doubt. Radiation therapy for rectal cancer is effective, but there are nuances. Are we doing everything right? We will try to find the answers to these and other questions about radiotherapy of gastrointestinal cancer in this webinar.

November 20, 2019

MR Imaging Techniques for SRS by Herwin SPECKTER, Medical Physicist

1:00 pm (Dublin, Edinburgh, Lisbon, London) - 2:00 pm CET (Amsterdam, Berlin, Bern, Paris, Rome, Stockholm, Vienna) - 8:00 am (Eastern time - New York, Canada) - 9:00 am (Brasilia) - 9:00 pm (Tokyo) - 5:00 am (Pacific time - Los Angeles) - 10:00 pm (Brisbane)

Imaging for SRS can be more demanding compared to conventional diagnostic imaging. In SRS, high-quality imaging is crucial for the identification and contouring of both lesions and organs at risk. SRS requires high geometric accuracy in order to treat successfully and safely, delivering large doses of radiation with the characteristic steep dose gradient. Imaging can provide additional information about tissue classification, prediction of volumetric control after treatment, and is important in follow up. Topics that will be covered in the talk: MR Hardware tendencies, geometric accuracy, MR-CT coregistration, modern MR sequences, image postprocessing, prediction of volumetric control after SRS, and future directions.

December 11, 2019

Radiosurgery of Intracranial Extraaxial Malignancies by Yoshimasa MORI, MD, DMSc, IFAANS

1:00 pm (Dublin, Edinburgh, Lisbon, London) - 2:00 pm CET (Amsterdam, Berlin, Bern, Paris, Rome, Stockholm, Vienna) - 8:00 am (Eastern time - New York, Canada) - 9:00 am (Brasilia) - 9:00 pm (Tokyo) - 5:00 am (Pacific time - Los Angeles) - 10:00 pm (Brisbane)

The role of radiosurgery for extraaxial malignancies including chordoma, paraganglioma, non-benign meningioma, hemangiopericytoma, skull-base malignant tumors, and skull-base metastases will be presented.