In recent years the field of picture archiving and communications systems - PACS - and image informatics has advanced due to both conceptual and technological developments. This book is the ultimate reference work by the founder of PACS and image informatics, Dr. H.K. "Bernie" Huang. The new third edition of this well-received book on this growing subject addresses the latest in PACS, from the electronic patient record to the full range of topics in digital imaging. Thoroughly revised but building upon its two previous editions, the third edition uses the framework of image informatics, not physics or engineering principles, to explain PACS and its application in clinical settings and labs. This book continues to be the single most comprehensive and authoritative resource that thoroughly covers the critical issues of PACS hardware and software design and implementation in a systematic and easily comprehensible manner. Based on feedback from over a dozen colleagues in imaging and PACS engineering, Dr. Huang has made careful adjustments and cuts to the basic physics and engineering content and eliminated redundancies in order trim over 250 pages from the new edition, without losing any detail in its clinical content. The second edition contained 28 rather lengthy chapters; the new third edition has been carefully revised and will contain 22 chapters, some of these representing combinations of topics from previously separate chapters. The overall goal of the revision is to make the new edition more easy to access and use than ever before, yet also offer sufficient detail for a complete understanding of this complex but absolutely vital area of radiology.