This is a practical and concise introduction to bedside emergency ultrasound. It covers the full spectrum of conditions diagnosed via this modality, both for guiding invasive procedures and for diagnosis in critical-care settings. It introduces the major applications for emergency ultrasound by using focused diagnostic questions and teaching the image acquisition skills needed to answer these questions. Images of positive and negative findings for each application (FAST, ECHO, etc.) are presented, as well as scanning tips for improved image quality. Each section contains a review of the literature supporting each application.