International Stereotactic Radiosurgery Society

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Webinars

The ISRS began a serie of Webinars, starting October 11th, 2016.

These Webinars are organized through a specific online service. If you wish to attend these sessions, you will be asked to register first, but you also need to have a device (computer, smartphone, tablet) that meets specific requirements. Click here to check your system

After the webinar, a video replay is made available to ISRS members.

Next Webinars

September 29, 2017

Advances in functional radiosurgery by Roberto MARTINEZ ALVAREZ

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) - 10:00pm (Brisbane)

The functional indications were the first procedures treated by radiosurgery. The purpose of these procedures is to correct the tissue disorder related to symptoms by damaging the nervous system or performing a "neuromodulation". Functional indications treated by Gamma Knife radiosurgery have increased in the last two decades. From a total of nearly one million patients treated by Gamma Knife, 7% of these cases correspond to these procedures. Of all patients treated for functional problems, 87% suffer from trigeminal neuralgia. Nowadays we can consider radiosurgery as an initial treatment for treating Trigeminal Neuralgia with a similar efficacy to MVD with a lower recurrence rate if we pay attention to this extensive review. Treatment by radiosurgery of epileptic foci in mesial and extratemporal epilepsy revealed very promising results with 60% of cases in Engel I and no relevant complications. The results obtained with the treatment of hypothalamic hamartomas are very promising too: no side effects and improvement in both seizures, aggressiveness and cognitive impairment. The good results observed after radiation of VIM nucleus have increased the number of candidates in recent years for treating hereditary or Parkinsonian tremor. We perform by radiosurgery capsulotomies, and cingulotomies to treat OCD, depression and anorexia nervosa with great success. We will review in this seminar the functional indications that are treated by radiosurgery with Gamma Knife and the effectiveness of these procedures.

October 11, 2017

SRS and AVMs after the ARUBA Trial by Antonio DE SALLES

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) - 10:00pm (Brisbane)

The ARUBA Trial came to "organize and challenge" the treatment of AVMs. Extreme aggressive treatment to these challenging lesions brought harm to patients to a level that alarmed the Neurologists. They made the diagnosis of AVMs in healthy asymptomatic patients, just to have the difficult experience of seeing their patients returning to them with neurological disasters. They especially questioned the then proposed treatments for these lesions. The multi-disciplinary approach so much preached by all teams working in teaching centers was frequently not practiced in the private offices of the doctors proposing treatments. Now, in the aftermath of the hard truth of the data generated by the ARUBA trial, Radiosurgery takes a new role approaching the patients with AVMs. This webinar seeks to summarize the discussion of the ARUBA data; the new data generated since the disclosure of ARUBA results and propose an algorithm for approaching patients with AVMs that hopefully will generate trust among the Neurologists referring the patients for treatment.

November 09, 2017

Differentiation of Radiation-induced Changes and Tumor Progression after Intracranial Radiosurgery by Mikhail CHERNOV

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) - 10:00pm (Brisbane)

A number of intracranial tumors demonstrate some degree of enlargement after stereotactic radiosurgery. It necessitates differentiation of their regrowth and various treatment-related effects. The diagnosis is frequently complicated by histopathological heterogeneity of the lesion with coexistent viable neoplasm and radiation-induced tissue changes. Several neuroimaging modalities, namely structural MRI, DWI, DTI, perfusion CT and MRI, single-voxel and multi-voxel proton MRS, as well as SPECT and PET with various radioisotope tracers, may provide valuable diagnostic information. Each of these methods has advantages and limitations that may influence their usefulness and diagnostic accuracy.

November 24, 2017

SBRT for Borderline Resectable/Locally Advanced Pancreatic Cancer by Marta SCORSETTI

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) - 10:00pm (Brisbane)

Pancreatic ductal adenocarcinoma is characterized by a poor prognosis, with a 5-year overall survival rate of about 6%. Surgery is the gold standard of care with 5-year OS rates of 20% to 25%. More than 50% of patients, however, are borderline resectable or unresectable at the time of diagnosis, mainly due to locally advanced disease or distant metastases. In patients with locally advanced pancreatic cancer, the integration of chemotherapy and chemo-radiation treatment is the current therapeutic option. In the recent years, the role of SBRT in the treatment of borderline resectable and unresectable pancreatic cancer was investigated to confirm the hypothetical advantages of this therapy over conventional chemo-radiation.  In this webinar clinical data of SBRT efficacy and toxicity will be discussed.

February 08, 2018

Everything You Always Wanted to Know About Radiosurgery of AVM (But Were Afraid to Ask) by Mikhail CHERNOV

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) - 10:00pm (Brisbane)

Stereotactic radiosurgery (SRS) is an effective management option of intracranial AVM. It is particularly indicated for deep-seated or critically-located lesions. Successful treatment results in obliteration of the nidus within 1-3 years (so-called “latency period”) due to gradual thickening of the vessel wall. In small AVM (® is used. In general, it seems that for Spetzler-Martin grades I-II AVM microsurgical resection is the treatment of choice, for grade III single-staged SRS may be considered, whereas for grade IV-V either staged SRS or combined treatment is reasonable. However, this scheme is very general, and determination of the optimal treatment strategy for such patients depends on the various additional parameters.