Key concepts in the use of the radiorgraphy as a diagnostic tool for the emergency physician are presented in Chapters 1 and 2—Introduction to Emergency Radiology and Fundamentals of Skeletal Radiology. These chapters provide an introduction to the principles of radiographic analysis that are used throughout the book. Chapters 3 through 12 address the skeletal trdiology of the extremities and pelvis. Chapter 14 continues tieh a discussion of the thoracolumbar spine. Facial inaging is covered in Chapter 15. An introduction to cranial CT appears in chapter 16. Chapters 17 and 18 are devoted to pulmonary and cardiovascular radiography. Chapter 19 discusses abdominal radiography, including plain film interpretation and advanced imaging studies such as computed tomography, enteric contrast studies, and ultrasonography. The radiographic evaluation of the trauma victim is covered in Chpater 20. An introductory overview of emergency department ultrasonography is provided in Chapter 21. Pediatric considerations, including the developing skeleton, abdominal and respiratory tract emergencies, and the radiology of child abuse, are reviewed in Chapter 22. Chapter 23 addresses the role of radiology in the evaluation of the poisoned patient, a topic unique to emergency medicine. Finally, a discussion of quality improvement completes the text.