How does Stereotactic Radiosurgery (SRS) work?

Similar to external beam radiation therapy, radiosurgery is performed using a linear accelerator. It generates a high- energy radiation beam focused precisely on the tumour. The beam is delivered from many different angles, intersecting at the tumour, to deliver the prescribed amount of radiation.

During treatment planning, our clinical team utilizes one or more types of 3- dimensional scans. These can include a CT scan, an MRI and/ or a PET scan. Through the use of three-dimensional computer-aided planning and the high degree of immobilization, the treatment can minimize the amount of radiation that passes through healthy brain tissue. Radiosurgery shapes the radiation beam to match the outline of the tumor and includes a very small margin of normal brain to prevent recurrence.



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