Stereotactic Radiosurgery and Radiation Therapy

Stereotactic Radiosurgery

Stereotactic Radiosurgery (SRS) is a non-invasive treatment that utilizes a system of three-dimensional coordinates in order to locate a target in the brain and deliver a high-dose of radiation with sub-millimeter accuracy. The greater accuracy offered by SRS facilitates treatment in a single session.

SRS can use either an external, three-dimensional frame non-invasively attached directly to an immobilized patient or image guidance technology.

The primary benefit of SRS with the Elekta Synergy® S is its ability to locate small targets in the brain with great precision.

Stereotactic Radiation Therapy

Stereotactic radiation therapy (SRT) treatments deliver high doses of radiation to tumors throughout the body with sub-millimeter precision. The greater accuracy offered by SRT methodology facilitates treatments in fewer treatment sessions (called fractions) than 3D conformal radiation therapy or intensity-modulated radiation therapy (IMRT). SRT treatments are typically delivered in two to five sessions. The primary benefit of stereotactic treatment is its ability to locate small targets with great precision.

SRT utilizes a system of three-dimensional coordinates in order to locate a pre-determined target for treatment. Stereotactic technique can use either an external, three-dimensional frame non-invasively attached directly to an immobilized patient or image guidance technology.

Although external frames and fixation are highly appropriate for targets such as the brain where organ location can be directly predicted via localization of bony anatomy, they encounter limitations when used extracranially. It is in this area where the imaging capabilities developed for Elekta Synergy® S can be combined with stereotaxy to give new options to patients who may not be candidates for surgery or conventional radiation therapy.