X-ray or gamma ray systems or devices – Specific application – Computerized tomography
Patent
1993-08-02
1995-03-28
Dzierzynski, Paul M.
X-ray or gamma ray systems or devices
Specific application
Computerized tomography
378 5, 378901, G01N 23087, G01N 23083, A61B 603
Patent
active
054024609
ABSTRACT:
A microtomographic system (10) for generating high-resolution, three dimensional images of a specimen (16) is disclosed. The microtomograph system includes an x-ray generator (12) that produces an x-ray beam (14), a specimen holder (18) that holds the specimen in the beam, and an x-ray detector (20) that measures the attenuation of the beam through the specimen. Two projections of each view of the specimen are made with this microtomographic system. Each projection is made with a different intensity x-ray beam. After the projections of one view of the specimen are made, the specimen is rotated on the specimen holder and another set of projections are made. The projections of each view of the specimen are analyzed together to provide a quantitative indication of the phase fraction of the material comprising the specimen. The projections of the different views are combined to provide a three-dimensional image of the specimen.
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Fisher Robert M.
Johnson Roger H.
Nelson Alan C.
Bruce David Vernon
Dzierzynski Paul M.
University of Washington
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