When I first proposed this book, one of the hopes was that it would be the stage upon which would be conducted a quiet, well reasoned discussion of the various techniques of stereotactic radio surgery. At that time, there was quite a bit of rancorous debate that tended to obscure the scientific and medical merits of each of the separate methods. At the present time, I am happy to report that the field of stereotactic radiosurgery is much less riven by such inappropriate posturing. The field has taken many steps towards maturity, both technically and medically. In the course of this mat...