The Silhouette Sign; Location of Intrathoracic Lesions
name: label: Collection Creator
content: National Museum of American History (U.S.). Division of Medical Sciences
label: Collection Creator
content: National Museum of American History (U.S.). Division of Medical Sciences
setName: label: See more items in
content: Medical Sciences Film Collection
label: See more items in
content: Medical Sciences Film Collection / Series 1: Technical Films
physdesc: label: Extent
content: 1 Film reel (color, composite optical soundtrack, print, 16mm; 1100 feet; duration: 30 minutes)
unitdate: label: Date
content: 1967
container: label: Container
content: Reel OF 222.20
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials
label: Type
content: Film reels
scopecontent: label: Scope and Contents
content: Film Planning and Production under Direction of the Exhibits and Audiovisual Promotion Department and Medical Communications Division, Eli Lilly and Company, by the Lowe Company; by Benjamin Felson, M.D., Chairman and Professor, Department of Radiology, University of Cincinnati, 

Listed in previous Medical Sciences Film Catalogue as "Location of Interthoracic Lesions."

Accompanying material states: The film is set in a classroom, where Dr. Felson, with the help of models and x-ray films, discusses the fundamentals of radiology. He shows the effect of various substances (air, tissue, bone) on x-rays and uses these facts to explain the silhouette sign. With radiographs of actual cases, Dr. Felson demonstrates the value of silhouette sign as a means of determining the presence, location, and extent of intrathoracic lesions. The unique features of the film are its classroom atmosphere and the quiz sessions, which allow audience participation.