Accession Number : ADA013254


Title :   Correlation of ACTA Scanner Number with Electron Density.


Descriptive Note : Technical note,


Corporate Author : ARMED FORCES RADIOBIOLOGY RESEARCH INST BETHESDA MD


Personal Author(s) : Kiker,W. E. ; Hinz,T. W. ; Ledley,R. S.


Report Date : MAY 1975


Pagination or Media Count : 13


Abstract : The report demonstrates that the numbers generated by computerized axial-transverse tomography devices, which are proportional to x-ray attenuation coefficients, correlate with electron density in low-Z biological materials rather than with mass density. For high-Z materials, where the photoelectric cross section is appreciable, the correlation is with the density of high-Z atoms.


Descriptors :   *ELECTRON DENSITY, *X RAYS, *RADIOGRAPHY, SCANNING, COMPUTERS, DIAGNOSIS(MEDICINE), BLOOD, BIOLOGICAL PRODUCTS.


Subject Categories : MEDICINE AND MEDICAL RESEARCH
      RADIOBIOLOGY


Distribution Statement : APPROVED FOR PUBLIC RELEASE