Artifact reduction method for tomographic image reconstruction u

Details Artifact reduction method for tomographic image reconstruction u Artifact reduction method for tomographic image reconstruction u

1993-07-16

1995-03-21

Dzierzynski, Paul M.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378 19, 378901, 36441314, G01N 23083

Patent

active

054003776

ABSTRACT:
A cone beam scanning apparatus reduces image artifacts incident to cone beam geometry by decomposing an acquired image into soft tissue and bone and air images based on the density of the pixels in that image. The soft tissue image is filtered to remove frequency space data corresponding to zones of incomplete frequency space data in the original projection image to remove the generated artifacts.

REFERENCES:
patent: 5170439 (1992-12-01), Zeng et al.
patent: 5345513 (1994-09-01), Taheda et al.
Practical cone-beam algorithm, Feldkamp, Davis and Kress, J. Opt. Soc. Am. A/vol. 1, No. 6, Jun. 1984, pp. 612-619.

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