George P Roberson

US Patent:

6624425, Sep 23, 2003

Filed:

May 3, 2001

Appl. No.:

09/847929

Inventors:

David T. Nisius - Des Plaines IL
George P. Roberson - Tracy CA
David C. Camp - Danville CA
David Entwistle - Buffalo Grove IL

Assignee:

Bio-Imaging Research, Inc. - Lincolnshire IL

International Classification:

G01T 100

US Classification:

250393, 25036301

Abstract:

A method and apparatus are provided for assaying a waste container. The method includes the steps of forming a plurality of slices through a volume of the waste container, performing a relatively fast passive prescan to measure a level of radioactivity of each of the plurality of slices and identifying at least some slices of the plurality of slices having a relatively high level of radioactivity. In addition, the method includes the steps for performing a relatively fast active prescan of the drum to determine the average attenuation of the plurality of slices. The method further includes the steps of determining an passive assay time for the identified slices based upon the measured radioactivity and average attenuation and performing relatively slow passive and active CT scans of the identified slices based upon the determined passive and active CT assay time to quantify a source of the measured radioactivity by weight.

US Patent:

55663419, Oct 15, 1996

Filed:

Oct 5, 1992

Appl. No.:

7/957511

Inventors:

George P. Roberson - Tracy CA
Michael F. Skeate - Livermore CA

Assignee:

The Regents of the University of California - Oakland CA

International Classification:

G06T 120

US Classification:

395800

Abstract:

An apparatus for multi-dimensional computation which comprises a computation engine, including a plurality of processing modules. The processing modules are configured in parallel and compute respective contributions to a computed multi-dimensional image of respective two dimensional data sets. A high-speed, parallel access storage system is provided which stores the multi-dimensional data sets, and a switching circuit routes the data among the processing modules in the computation engine and the storage system. A data acquisition port receives the two dimensional data sets representing projections through an image, for reconstruction algorithms such as encountered in computerized tomography. The processing modules include a programmable local host, by which they may be configured to execute a plurality of different types of multi-dimensional algorithms. The processing modules thus include an image manipulation processor, which includes a source cache, a target cache, a coefficient table, and control software for executing image transformation routines using data in the source cache and the coefficient table and loading resulting data in the target cache.