The Book of Echo is concise yet comprehensive; it is focused on the adult echocardiography. It is written to be the echo book that echocardiographers, echocardiography fellows, cardiologist, cardiology fellows, and cardiac technicians use without having to navigate through large books looking for practical or diagnostic clues. The book has 20 chapters with more than 600 illustrations covering the basic technical aspect to more advanced diagnostic techniques. All the provided information complies with the latest available echocardiography guidelines. Topics include basics physics, image acquisition and optimization techniques, echocardiography enhancing agent, stress echocardiography, echocardiographic diagnosis, introduction to congenital heart disease, and interventional echocardiography.