Dual-kVp radiography

William R. Brody, F. Graham Sommer, Leonard A. Lehmann, Albert Macovski, Robert E. Alvarez, Norbert J. Pelc, Stephen J. Riederer, Anne Hall

Research output: Contribution to journalArticlepeer-review


The use of information contained in the transmitted x-ray spectrum provides the capability for selective removal of substances of a particular mean atomic number in projection radiographs. Using a prototype system for line-scanned digital radiography, x-ray images were produced with two different x-ray spectra by modulating the kVp applied to the x-ray source and filtering the x-ray beam. Using a previously described Compton/photoelectric decomposition algorithm, subtraction images are made with bone or soft-tissue (water) shadows removed. Applications to chest, abdominal and skeletal imaging in-vivo are demonstrated.

Original languageEnglish (US)
Pages (from-to)239-243
Number of pages5
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - Jul 16 1981

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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