The word ‘‘stereotactic’’ derives from the Greek word ‘‘stereos’’ for’ ‘three dimensions,’’ and the Latin word ‘‘tactus’’ for ‘‘to touch’’. Stereotactic biopsy is a neurosurgical procedure which involves mapping the brain in a three dimensional coordinate system, with the help of MRI and CT scans and 3D computer workstations and any area of the brain that can be accurately targeted in stereotactic space (3D coordinate system). Stereotactic brain biopsy is a minimally invasive procedure that uses this technology to obtain samples of brain tissue for diagnostic purposes or excision of tumors.
The biopsy will provide information on types of abnormal cells present in the lesion. The purpose of a biopsy is to discover the type and grade of the lesion as well as its molecular biology and its growth pattern. With the help of MRI and CT scans and 3D computer workstations, neurosurgeons are able to accurately target any area of the brain in stereo tactic space (3D coordinate system). Stereotactic biopsy surgery is the most accurate method of obtaining a diagnosis. Once a sample is obtained, a pathologist examines the tissue under a microscope and writes a pathology report containing an analysis of the brain tissue.