1. Further development of stereotactic surgery was made by Brown, Roberts and Wells in 1980. 2. In theory, any organ system inside the body can be subjected to stereotactic surgery . 3. Recently, stereotactic surgery has proven successful in treating small tumors that have been diagnosed early. 4. Thus, stereotactic surgery of the brain was born. 5. :Precise angular positioning is done in Stereotactic surgery . 6. Using the combination method of open and stereotactic surgery , intraventricular hemorrhages can potentially be evacuated successfully. 7. This invention stimulated renewed interest in, and further development of, image-guided surgery, specifically, stereotactic surgery and radiosurgery. 8. Chemical stimulation is typically administered through a cannula that is inserted into the brain via stereotactic surgery . 9. Stereotactic surgery was a major step.10. Earlier advances at Pico Street included development of methods for providing CT-scanner guidance of 3-dimensional brain stereotactic surgery systems.