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Title: Pseudolocal tomography

Local tomographic data is used to determine the location and value of a discontinuity between a first internal density of an object and a second density of a region within the object. A beam of radiation is directed in a predetermined pattern through the region of the object containing the discontinuity. Relative attenuation data of the beam is determined within the predetermined pattern having a first data component that includes attenuation data through the region. The relative attenuation data is input to a pseudo-local tomography function, where the difference between the internal density and the pseudo-local tomography function is computed across the discontinuity. The pseudo-local tomography function outputs the location of the discontinuity and the difference in density between the first density and the second density.
 [1];  [2]
  1. (Los Alamos, NM)
  2. (Manhattan, KS)
Issue Date:
OSTI Identifier:
Regents of University of California, Office of Technology (Alameda, CA) LANL
Patent Number(s):
US 5539800
Contract Number:
Research Org:
Los Alamos National Laboratory (LANL), Los Alamos, NM
Country of Publication:
United States
pseudolocal; tomography; local; tomographic; data; determine; location; value; discontinuity; internal; density; region; beam; radiation; directed; predetermined; pattern; containing; relative; attenuation; determined; component; input; pseudo-local; function; difference; computed; outputs; tomography function; local tomography; predetermined pattern; internal density; /378/