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Title: High resolution, multiple-energy linear sweep detector for x-ray imaging

Apparatus is disclosed for generating plural electrical signals in a single scan in response to incident X-rays received from an object. Each electrical signal represents an image of the object at a different range of energies of the incident X-rays. The apparatus comprises a first X-ray detector, a second X-ray detector stacked upstream of the first X-ray detector, and an X-ray absorber stacked upstream of the first X-ray detector. The X-ray absorber provides an energy-dependent absorption of the incident X-rays before they are incident at the first X-ray detector, but provides no absorption of the incident X-rays before they are incident at the second X-ray detector. The first X-ray detector includes a linear array of first pixels, each of which produces an electrical output in response to the incident X-rays in a first range of energies. The first X-ray detector also includes a circuit that generates a first electrical signal in response to the electrical output of each of the first pixels. The second X-ray detector includes a linear array of second pixels, each of which produces an electrical output in response to the incident X-rays in a second range of energies, broader than the first range of energies. Themore » second X-ray detector also includes a circuit that generates a second electrical signal in response to the electrical output of each of the second pixels. 12 figs.« less
Inventors:
;
Issue Date:
OSTI Identifier:
372587
Assignee:
Univ. of California, Oakland, CA (United States) PTO; SCA: 440101; PA: EDB-96:144967; SN: 96001644979
Patent Number(s):
US 5,548,123/A/
Application Number:
PAN: 8-350,854; TRN: 96:023337
Contract Number:
AC03-76SF00098
Resource Relation:
Other Information: PBD: 20 Aug 1996
Research Org:
University of California
Country of Publication:
United States
Language:
English
Subject:
44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; X-RAY DETECTION; RADIATION DETECTORS; DESIGN; ENERGY DEPENDENCE; IMAGES