Book review: Modern Diagnostic X-Ray Sources, 2nd Edition Rolf Behling | Review by Silvano Donati We have just passed the 125th anniversary of Wilhelm Röntgen’s discovery of X-rays in 1895, a discovery that was honored with the first Nobel Prize in Physics, awarded to Röntgen in 1901. Surprisingly, the X-ray generator is today the longest-lived component still based on vacuum tube technology, despite the continuous progress of X-ray applications in science, medicine and testing. This book is an application-oriented text that covers, in 10 chapters, virtually all the aspects of X-ray techniques, including the latest developed CT (computed tomography) and novel X-ray sources. The first chapter is a 50-page historical survey that includes an account of the stages of technical evolution. It is followed by three chapters on the basics of X-ray generation and of interaction of X-rays with matter. Imaging modalities and CT with applications to medicine follow in 70 pages. Three more chapt...