Digital processing of film radiographs

F. G. Sommer, R. L. Smathers, R. L. Wheat, R. E. Alvarez, W. R. Brody, D. M. Cassel

Research output: Contribution to journalArticlepeer-review


Initial clinical experience with a system for the digitization, processing, and display of film radiographs is described. Film is digitized using a high-intensity laser scanner; the recorded image data may then be subjected to a wide variety of processing options, with display of processed images on television monitors. The possibilities of clinical applications to processing and display of chest radiographs and film mammograms are described. A comparison of conventional analog subtraction and digitized film subtraction angiography indicated equivalent diagnostic capability, with the advantage of flexible, interactive image processing with the digital technique. A specially designed, energy-selective cassette permits dual-energy imaging from two films effectively exposed to different x-ray energy spectra. Dual-energy imaging may be capable of the characterization of body materials, including lung nodules, and useful for eliminating obscuring radiographic shadows overlying regions of interest.

Original languageEnglish (US)
Pages (from-to)191-196
Number of pages6
JournalAmerican Journal of Roentgenology
Issue number1
StatePublished - 1985
Externally publishedYes

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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