Tower Pittsburgh, PA 15213 3600 Gaston Avenue USA Dallas, TX 75246 USA Lech Papiez, PhD Associate Professor Department of Radiation Oncology University of Texas Southwestern Medical Center 5801 Forest Park Road Dallas, TX 75390 Co-Editors: USA John J. Kresl, MD, PhD Arizona Oncology Services at Robert D. Timmerman, MD St. Joseph's Hospital & Medical Center Professor and Vice-Chairman Department of Radiation Oncology Ef? e Marie Cain Distinguished Chair in CyberKnife Center Cancer Therapy Research Barrow Neurological Institute Department of Radiation Oncology Gamma Knife Center University of Texas Southwestern Medical Center 350 West Thomas Road 5801 Forest Park Road Phoenix, Arizona 85013 Dallas, TX 75390 USA USA Library of Congress Control Number: 2007920177 ISBN 978-3-540-69885-2 Springer Berlin Heidelberg New York This work is subject to copyright.