The series "Medical Radiology - Diagnostic Imaging and Radiation Oncology" is the successor to the well known "Encyclopedia of Medical RadiologyjHandbuch der medizinischen Radiologie." This international handbook with its unique compila tion of data in more than fifty volumes lags behind the fast developing knowledge in radiology today. "Medical Radiology" brings the state of the art on special topics in a timely fashion. The first volume of the series was "Lung cancer," edited by Scarantino. This volume "Innovation in Radiation Oncology," edited by H.R. Withers and L.J. Peters, presents data...