Lars Laksell: If you have been the beneficiary of a radiosurgery treatment, then you have Lars Laksell to thank for it. Laksell was a professor of surgery, as well as a neurosurgeon. He looked to some of the pioneering work done by other neurosurgeons, and even received some inspiration from an apparatus developed for animal experimentation. After making some adjustments, Leksell developed a stereotactic apparatus meant for human neurosurgery — the first device of its kind. Other neurosurgeons have learned from Laksell, and he is concerned a pioneer in the field.