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Title: Method and apparatus for enhanced sensitivity filmless medical x-ray imaging, including three-dimensional imaging

Abstract

A filmless X-ray imaging system includes at least one X-ray source, upper and lower collimators, and a solid-state detector array, and can provide three-dimensional imaging capability. The X-ray source plane is distance z.sub.1 above upper collimator plane, distance z.sub.2 above the lower collimator plane, and distance z.sub.3 above the plane of the detector array. The object to be X-rayed is located between the upper and lower collimator planes. The upper and lower collimators and the detector array are moved horizontally with scanning velocities v.sub.1, v.sub.2, v.sub.3 proportional to z.sub.1, z.sub.2 and z.sub.3, respectively. The pattern and size of openings in the collimators, and between detector positions is proportional such that similar triangles are always defined relative to the location of the X-ray source. X-rays that pass through openings in the upper collimator will always pass through corresponding and similar openings in the lower collimator, and thence to a corresponding detector in the underlying detector array. Substantially 100% of the X-rays irradiating the object (and neither absorbed nor scattered) pass through the lower collimator openings and are detected, which promotes enhanced sensitivity. A computer system coordinates repositioning of the collimators and detector array, and X-ray source locations. The computer system canmore » store detector array output, and can associate a known X-ray source location with detector array output data, to provide three-dimensional imaging. Detector output may be viewed instantly, stored digitally, and/or transmitted electronically for image viewing at a remote site.« less

Inventors:
 [1]
  1. (Berkeley, CA)
Issue Date:
Research Org.:
University of Hawaii
OSTI Identifier:
870132
Patent Number(s):
5461653
Assignee:
University of Hawaii (Honolulu, HI) OAK
DOE Contract Number:  
AC03-83ER40103
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; apparatus; enhanced; sensitivity; filmless; medical; x-ray; imaging; including; three-dimensional; source; upper; collimators; solid-state; detector; array; provide; capability; plane; distance; z; collimator; x-rayed; located; planes; moved; horizontally; scanning; velocities; proportional; respectively; pattern; size; openings; positions; similar; triangles; defined; relative; location; x-rays; pass; corresponding; thence; underlying; substantially; 100; irradiating; neither; absorbed; nor; scattered; detected; promotes; computer; coordinates; repositioning; locations; store; output; associate; data; viewed; instantly; stored; digitally; transmitted; electronically; image; viewing; remote; site; enhanced sensitivity; output data; detector output; ray imaging; x-ray source; detector array; x-ray imaging; source location; solid-state detector; dimensional imaging; /378/

Citation Formats

Parker, Sherwood. Method and apparatus for enhanced sensitivity filmless medical x-ray imaging, including three-dimensional imaging. United States: N. p., 1995. Web.
Parker, Sherwood. Method and apparatus for enhanced sensitivity filmless medical x-ray imaging, including three-dimensional imaging. United States.
Parker, Sherwood. Sun . "Method and apparatus for enhanced sensitivity filmless medical x-ray imaging, including three-dimensional imaging". United States. https://www.osti.gov/servlets/purl/870132.
@article{osti_870132,
title = {Method and apparatus for enhanced sensitivity filmless medical x-ray imaging, including three-dimensional imaging},
author = {Parker, Sherwood},
abstractNote = {A filmless X-ray imaging system includes at least one X-ray source, upper and lower collimators, and a solid-state detector array, and can provide three-dimensional imaging capability. The X-ray source plane is distance z.sub.1 above upper collimator plane, distance z.sub.2 above the lower collimator plane, and distance z.sub.3 above the plane of the detector array. The object to be X-rayed is located between the upper and lower collimator planes. The upper and lower collimators and the detector array are moved horizontally with scanning velocities v.sub.1, v.sub.2, v.sub.3 proportional to z.sub.1, z.sub.2 and z.sub.3, respectively. The pattern and size of openings in the collimators, and between detector positions is proportional such that similar triangles are always defined relative to the location of the X-ray source. X-rays that pass through openings in the upper collimator will always pass through corresponding and similar openings in the lower collimator, and thence to a corresponding detector in the underlying detector array. Substantially 100% of the X-rays irradiating the object (and neither absorbed nor scattered) pass through the lower collimator openings and are detected, which promotes enhanced sensitivity. A computer system coordinates repositioning of the collimators and detector array, and X-ray source locations. The computer system can store detector array output, and can associate a known X-ray source location with detector array output data, to provide three-dimensional imaging. Detector output may be viewed instantly, stored digitally, and/or transmitted electronically for image viewing at a remote site.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {1}
}

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