G - Physics – 01 – N
Patent
G - Physics
01
N
358/11.1
G01N 23/04 (2006.01) G01T 1/29 (2006.01)
Patent
CA 1282192
ABSTRACT OF THE DISCLOSURE METHOD AND APPARATUS FOR UTILIZING AN ELECTRO-OPTIC DETECTOR IN A MICROTOMOGRAPHY SYSTEMS The present invention is an apparatus and a method for producing tomographic images of an object irradiated by a beam of collimated radiation trans- mitted in a plurality of rays through a set of coplanar sections of an object as viewed from a plurality of angles about a rotation axis. The apparatus includes an imaging electro-optic detector to record the trans- mitted radiation, wherein the electro-optic detector alters the image format, the format alteration being focused; means to determine and align the projected position of the rotation axis on the electro-optic detector; means to align the object with respect to the rotation axis; means to determine and assure spatial uniformity of detector response; means to reduce signal dependent backgrounds; means to determine the projection coefficients from the transmitted radition with respect to one or more reference calibration exposures; and means to compute a reconstructed image of the object's attenuation coefficients.
551926
Deckman Harry William
Flannery Brian Paul
Borden Ladner Gervais Llp
Exxon Research And Engineering Company
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