Use of intravenous radiographic contrast agents / Julia R. Fielding -- Value of diagnostic tests / Bonnie Yankaskas -- Diseases of the head, neck, brain, and nervous system / Valerie Jewells and Wui K. Chong -- Diseases of the chest and breast / Aamer R. Chughtai and Wittaya Padungchaichote -- Diseases of the gastrointestinal tract / Julia R. Fielding and Wui K. Chong -- Diseases of the genitourinary tract / Julia R. Fielding, Wui K. Chong, and Ellie R. Lee -- Diseases of the musculoskeletal system / Nancy M. Major and Taymon Domzalski -- Diseases of the cardiovascular system / W. Brian Hyslop and Robert Dixon -- Imaging of pediatric patients / Sarah D. Bixxby and Carlo Buonomo -- A primer on the use of nuclear medicine tests / Amir H. Khandani.