Image reconstruction for a CT system implementing a dual fan bea

Details Image reconstruction for a CT system implementing a dual fan bea Image reconstruction for a CT system implementing a dual fan bea

1995-01-23

1996-04-30

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378901, 36441317, A61B 603

Patent

active

055132367

ABSTRACT:
The present invention, in one form, is an apparatus for performing image reconstruction using data obtained by a dual beam helical scan. In reconstructing an image in accordance with the present invention, projection data from each fan beam measurement is weighted by weighting factors to obtain a reconstructed slice. The data arrays selected and weighting factors applied vary depending on the table speed and the detector spacing measured at the axis of gantry rotation, i.e., the detector z spacing.

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patent: 5262946 (1993-11-01), Heuscher
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patent: 5270923 (1993-12-01), King et al.
Crawford et al., Computed Tomography Scanning with Simultaneous Patient Translation, Med. Phys. 17(6), Nov./Dec. 1990, pp. 967-982.

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