Technique for improving processor efficiency in CT imaging

Details Technique for improving processor efficiency in CT imaging Technique for improving processor efficiency in CT imaging

1995-09-22

1996-09-24

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378901, 36441316, A61B 603

Patent

active

055598463

ABSTRACT:
An arrangement for CT imaging of an object is provided, wherein a cone-beam X-ray source traverses a scan path to acquire line integral data at a plurality of view positions, a set of Radon data points in Radon space being associated with the arrangement, and it being necessary to compute the Radon derivative for each Radon data point in order to construct an image of the object. The arrangement includes a specified number of processors greater than one. The Radon space is partitioned by a number of coaxial planes separated from one another by an angle of .pi. divided by the specified number. A set of view positions likewise separated from one another by an angle equal to .pi. divided by the specified number are selected from the plurality of view positions, and each view position in the view position set is projected into a different one of the coaxial planes to define a subset of Radon data points corresponding to one of the planes, and also to one of the processors. The processors are operated in substantially simultaneous relationship to compute the Radon derivatives for the Radon data points of their respectively corresponding subsets.

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