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Stereotactic Imaging for Pretreatment, Treatment Setup and Treatment

Stereotactic refers to knowing exactly where the tumor is located in three-dimensional space, and employs both internal (imaging) and external (fixation) localization and treatment techniques. Stereotactic radiosurgery (SRS) originated from with stereotaxic neurosurgery where sophisticated imaging techniques determined the 3D internal anatomy relative to an external frame whose position did not change between the imaging procedures.

In modern SRS procedures, a key to treatment precision is the use of sophisticated imaging techniques prior to the procedure. The on-board imaging technologies help ensure accurate target positioning prior to the treatment for patient setup, and tracking during the procedure.

The Novalis Tx™ radiosurgery platform has the most advanced imaging platform of any radiosurgery system available with three sophisticated imaging chains: ExacTrac X-Ray 6D for pretreatment positioning and snap verification during treatment; the Varian On-Board Imager® (OBI) for cone beam CT; and fluoroscopy.

 

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Varian Radiosurgery
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