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The capability of fluoroscopic systems to determine differential Roentgen-ray absorptionA clinical fluoroscopic unit used in conjunction with a TV image digitization system was investigated to determine its capability to evaluate differential absorption between two areas in the same field. Fractional contrasts and minimum detectability for air, several concentrations of Renografin-60, and aluminum were studied using phantoms of various thicknesses. Results showed that the videometric response, when treated as contrast, shows a linear response with absorber thickness up to considerable thicknesses.
Document ID
19760028509
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Baily, N. A.
(California Univ. La Jolla, CA, United States)
Crepeau, R. L.
(California, University La Jolla, Calif., United States)
Date Acquired
August 8, 2013
Publication Date
May 1, 1975
Publication Information
Publication: Radiology
Volume: 115
Subject Category
Man/System Technology And Life Support
Accession Number
76A11475
Funding Number(s)
CONTRACT_GRANT: NGL-05-009-103
Distribution Limits
Public
Copyright
Other

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