Title: Method and apparatus for providing simultaneous displays in panoramic radiography

Abstract: Two different areas of a focal trough of a dental arch structure are simultaneously displayed on a radiograph when tubehead-camera assembly of an X-ray machine panoramically scans the dental arch structure. The different areas of the focal trough are obtained when a pair of parallel disposed film holding devices within the camera are caused to travel in proximate relationship to each other at different speeds. The X-rays activate and pass through one film before activating the other immediately therebehind.

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Inventors: Cushman, Robert H. (Princeton, NJ, US)

Application Number: 969042
Filing Date: 1978-12-13
Publication_date: 1980-03-18
Assignee: Pennwalt Corporation (Philadelphia, PA)
Primary Class(es): 378/39 378/168, 378/181
Other Classes:
US Patent Ref:

3636349

Jan, 1972

Faude

250/439.

Other Refs:
Primary Examiner: Church, Craig E.
Assistant Examiner:
Attorney: Suga; Arthur M.