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

Apparatus 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. The second X-raymore » detector also includes a circuit that generates a second electrical signal in response to the electrical output of each of the second pixels.« less
Inventors:
 [1];  [2]
  1. (Berkeley, CA)
  2. (Kensington, CA)
Issue Date:
OSTI Identifier:
870575
Assignee:
Regents of University of California (Oakland, CA) LBNL
Patent Number(s):
US 5548123
Contract Number:
AC03-76SF00098
Research Org:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA
Country of Publication:
United States
Language:
English
Subject:
resolution; multiple-energy; linear; sweep; detector; x-ray; imaging; apparatus; generating; plural; electrical; signals; single; scan; response; incident; x-rays; received; signal; represents; image; range; energies; comprises; stacked; upstream; absorber; provides; energy-dependent; absorption; array; pixels; produces; output; circuit; generates; broader; ray imaging; x-ray detector; linear array; imaging apparatus; electrical signals; apparatus comprises; electrical signal; electrical output; x-ray imaging; apparatus comprise; signal represents; single scan; ray detector; /250/

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