This book introduces the diagnosis of Emerging Infectious Diseases (EIDs)， including newly emerging infectious diseases and also infectious diseases that show resistance to present treatments. Radiographic examinations are of great value in EIDs diagnosis， differential diagnosis， treatment efficacy assessment and prognosis evaluation. This book covers severe acute respiratory syndrome(SARS)， human avian influenza (H5Nl，H7N9)， influenza A (HIN1)， hand-foot-mouth disease， acquired immune deficiency syndrome (AIDS)， viral hepatitis， pulmonary tuberculosis. All seven of these EIDs are associated with high incidence and mortality. This book details the imaging techniques， radiological appearance and characteristics of EIDs， and diagnosis and differential diagnosis of EID-related complications. Considering the unique and in some cases only partially understood nature of EIDs， appropriate space is provided in this book for the detailed explanation of the etiology， epidemiology，pathophysiology， clinical symptoms and signs， laboratory tests， clinical diagnosis and differential diagnosis， prevention， treatment，and prognosis of EIDs. As such， it will be a valuable resource for improving the prevention， diagnosis， and treatment of EIDs.