For some years experimental studies and clinical trials of ultrasound in many forms of treatment have yielded results which are sometimes significant but often contradictory. A critical guide and interpreter has been much needed to lead the nonspecialist through this maze of material. It is now at hand.
While the volume is based on a symposium held in 1962, there has been such extensive revision that the result is a good treatise on the present state of ultrasonics. It is particularly valuable that one fifth of the book is devoted to a clear and accurate discussion of the physics of ultrasound, designed for those who wish to use this agent but lack knowledge of the basic principles involved. The chapters which follow give accounts of the use of ultrasound in diagnosis of intracranial and ophthalmic lesions, in neurosurgery and otology, and in other clinical fields. There is also a restricted