Method and system for pre-processing cone beam data for reconstr

Details Method and system for pre-processing cone beam data for reconstr Method and system for pre-processing cone beam data for reconstr

1993-10-18

1995-10-24

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378901, 36441315, 36441319, A61B 603, G01N 23083

Patent

active

054616506

ABSTRACT:
Techniques and system for pre-processing cone beam projection data for reconstructing substantially free of interpolation-induced artifacts a three-dimensional computerized tomography (CT) image of a portion of an object are provided. Such techniques include identifying first, second and third regions on a surface array detector such that only cone beam projection data acquired in the identified regions is retained for subsequent processing. The identified regions cooperate to eliminate interpolation effects upon lines of integration situated relatively close to boundaries on the array detector and thus allow for reconstructing the substantially free of interpolation-induced artifacts CT image.

REFERENCES:
patent: 5257183 (1993-10-01), Tam
patent: 5319693 (1994-06-01), Eberhard et al.
patent: 5355309 (1994-10-01), Eberhard et al.
patent: 5383119 (1995-01-01), Tam
patent: 5390111 (1995-02-01), Tam
patent: 5390226 (1995-02-01), Tam
"Cone-beam Tomography: Recent Advances and a Tutorial Review", Bruce D. Smith, Optical Engineering-May 1990, vol. 29. No. 5-pp. 524-534.
"Image Reconstruction from Cone-Beam Projections: Necessary and Sufficient Conditions and Reconstruction Methods", Bruce D. Smith, IEEE Transactions on Medical Imaging, vol. MI-4, No. 1, Mar. 1985, pp. 14-25.

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