Method and apparatus for improving efficiency in computing radon

Details Method and apparatus for improving efficiency in computing radon Method and apparatus for improving efficiency in computing radon

1995-03-31

1997-01-14

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378901, 36441316, A61B 603

Patent

active

055947662

ABSTRACT:
In an arrangement for computed tomography imaging, line integral data is converted into a set of Radon data, for use in constructing an image of an object, by computing the derivatives for respective data points in the Radon data set. To improve efficiency in derivative computation, the Radon space is partitioned by a set of concentric spherical shells, so that each of the Radon data points lies on one of the shells. An equal number of spherical shells corresponds to each processor in an array of processors, and each processor is operated to compute respective Radon derivatives only for Radon data points lying on its corresponding shells.

REFERENCES:
patent: 5253171 (1993-10-01), Hsiao et al.
patent: 5257183 (1993-10-01), Tam
patent: 5333164 (1994-07-01), Tam
patent: 5446776 (1995-08-01), Tam

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