This textbook is a valuable resource for anyone interested in the subject of ultrasound physics. Written by Sidney K. Edelman, PH.D, it provides a comprehensive understanding of the principles that govern ultrasound waves. The fourth edition, published in 2024, is a hardcover book that is perfect for adult and further education. The book covers a range of topics, including the physics of ultrasound, such as how sound waves are produced, how they travel through different materials, and how they can be used for medical purposes. It is an excellent resource for anyone interested in the subject, regardless of their level of expertise.