Fast cone beam image reconstruction using a detector weight list

Details Fast cone beam image reconstruction using a detector weight list Fast cone beam image reconstruction using a detector weight list

1997-12-19

1999-09-28

Bruce, David Vernon

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378901, A61B 603

Patent

active

059600551

ABSTRACT:
A method and apparatus are provided for three dimensional computerized tomographic imaging of an object, wherein cone beam energy from a cone beam source is applied to at least a portion of an object to be imaged by causing relative rotational motion between the source and the object at a plurality of source positions along a path scanning trajectory. An area detector receives cone beam energy from the source on a plurality of detector elements arranged in an array of rows and columns, so that its detector elements develop a set of measurement signals at each of the plurality of source positions. Derivative Radon transform data is directly developing by multiplication of the measurement signals of each set by pre-calculated and stored weight factors. Thereafter, an image of the object is reconstructed using the directly developed Radon derivative data.

REFERENCES:
patent: 5640436 (1997-06-01), Kawai et al.
patent: 5862198 (1999-01-01), Samarasekera et al.
patent: 5901195 (1999-05-01), Sauer et al.
patent: 5901196 (1999-05-01), Sauer et al.

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