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