This book provides readers a broad overview of some of the most recent advances in the field of direct conversion detectors. There are a good mixture of general chapters in both technology and applications. Readers will enjoy an in-depth review of the research topics conducted at leading research institutions in the world. The signal conversion of the direct conversion into analogue/digital value is covered and the author also provides a review of ROIC (Read Out Integrated Circuits) chips used for direct image sensors. This book should be an excellent reference for people already working in the field as well as for people wishing to enter it. Covers a broad range of topics relevant to academia and industry, augmenting existing books on X-ray detection Includes in-depth analysis on how to optimize direct detection architecture Shows application of direct conversion detectors in medical imaging, high energy physics, non-destructive testing & security.