Glossary

Supratentorial primative neuroectodermal tumors

Stereotactic Radiosurgery – A form of radiation where multiple radiation beams are p assed along corridors to intersect at a target. The summation dose of the multiple beams at the point of their intersection is typically necrosing to the tissue within this “target” zone. The stereotactic or stereotaxis referes to using the 3-D coordinate grid defined by the imaging computer (MRI or CT) to calculate the corridor pathway and what tissue it passes through and to define the geometry of the target zone.

Somatosensory Evoked Potential

Surgical site infection

Superficial Temporal Artery

A stent retriver.  A mechanical device used in an endovascular procedure to remove a blood clot from a major vessel in an organ such as the brain or heart to re-establish blood flow.

Short Tau Inversion Recovery – A sequence in MR imaging that suppresses the intensity of fat in the image.

Supratentorial tumors of the lateral and third ventricle

Refers to outside the intima layer of a blood vessel.  The are three layers if tissue that make up the walls of a blood vessel, the intima (inner layer), the media and the adventitia.  Subintimal typically refers to something between the intimal and medial layers,

aka BOLD (blood-oxyegen-level dependent) image or BOLD venography. This is a MRI imaging technique that is extremely sensitive to venous blood, hemorrhage and iron storage. It is particularly good at imaging venous blood.