Pediatric Nuclear Medicine , edited by Drs. James, Wagner, and Cooke of the Johns Hopkins University School of Medicine, is a major, comprehensive work devoted to nuclear medicine in the area of pediatrics; as such, it represents a current state of the art. The 14 chapters and 85 contributors provide a broad spectrum of experience and knowledge in a new and fast-developing field. Among its valuable inclusions are well-documented, extensive coverage of diagnostic procedures and comparisons of nuclear medicine and roentgenographic procedures, with specific sections on ultrasound and angiography. Although it was written to provide an authoritative reference source, my opinion is that it falls somewhat short of this goal, due more to editorial difficulties than to faulty subject material. I believe that a broad subject text of this type should selectively review the background for procedures, and then provide appropriate techniques with case examples. Admittedly, the number of contributors and