Pseudolocal tomography

Details Pseudolocal tomography Pseudolocal tomography

1995-03-24

1996-07-23

Porta, David P.

X-ray or gamma ray systems or devices

Miscellaneous

378901, 36441314, G06F 1500

Patent

active

055398006

ABSTRACT:
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.

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Adel Faridani et al., "Local Tomography", 2 Siam J. Appl. Math., vol. 52, pp. 459-484 (Apr. 1992).

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