The first update of the Radiographic Testing Handbook in over 15 years, this fourth edition offers revised and expanded content throughout, including over 150 new color images contributed by practitioners around the world. A chapter on neutron radiography has been added, as well as new technical information in the areas of digital imaging, data processing, and digital image reconstruction. All attenuation tables have been recalculated and other material has been updated with the most recent information in such areas as radiation sources, standards, and applications, including an extensive discussion of radiography for airport security.