From the reviews of the fourth edition: “This introductory book on the physics of nuclear medicine also includes a brief description of radiobiology and radiation protection and regulations pertinent to nuclear medicine. … It is written for residents in nuclear medicine and radiology, and for nuclear medicine technology students. Fellows in nuclear radiology would also benefit from this book. … This update is appropriate due to the advances in the field.” (Bennett S. Greenspan, Doody’s Book Reviews, April, 2013)