This monograph clearly and briefly presents the physics and technical aspects of ultrasound production and its application to intracranial problems. It is based on A-scans, but B-scanning is mentioned in passing. Proper emphasis is placed on the necessity for a thorough background in other neurological diagnostic disciplines, particularly roentgenographic plainfilm and contrast examinations. The possibilities of technical and diagnostic errors are surveyed. The normal echoencephalogram is well described. Major emphasis is placed on the effects of skull trauma and intracranial hemorrhage. However, the sections on hydrocephalus and brain tumors deserve special mention. Brief case reports, topical summaries, and useful tables are included. The illustrations are excellent, and the references and index are workmanlike. The book is recommended.