Pseudolocal tomography
Abstract
Local tomographic data is used to determine the location and value of a discontinuity between a first internal density of an object and a second density of a region within the object. A beam of radiation is directed in a predetermined pattern through the region of the object containing the discontinuity. Relative attenuation data of the beam is determined within the predetermined pattern having a first data component that includes attenuation data through the region. The relative attenuation data is input to a pseudo-local tomography function, where the difference between the internal density and the pseudo-local tomography function is computed across the discontinuity. The pseudo-local tomography function outputs the location of the discontinuity and the difference in density between the first density and the second density.
- Inventors:
-
- Los Alamos, NM
- Manhattan, KS
- Issue Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- OSTI Identifier:
- 870532
- Patent Number(s):
- 5539800
- Assignee:
- Regents of University of California, Office of Technology (Alameda, CA)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- DOE Contract Number:
- W-7405-ENG-36
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- pseudolocal; tomography; local; tomographic; data; determine; location; value; discontinuity; internal; density; region; beam; radiation; directed; predetermined; pattern; containing; relative; attenuation; determined; component; input; pseudo-local; function; difference; computed; outputs; tomography function; local tomography; predetermined pattern; internal density; /378/
Citation Formats
Katsevich, Alexander J, and Ramm, Alexander G. Pseudolocal tomography. United States: N. p., 1996.
Web.
Katsevich, Alexander J, & Ramm, Alexander G. Pseudolocal tomography. United States.
Katsevich, Alexander J, and Ramm, Alexander G. Mon .
"Pseudolocal tomography". United States. https://www.osti.gov/servlets/purl/870532.
@article{osti_870532,
title = {Pseudolocal tomography},
author = {Katsevich, Alexander J and Ramm, Alexander G},
abstractNote = {Local tomographic data is used to determine the location and value of a discontinuity between a first internal density of an object and a second density of a region within the object. A beam of radiation is directed in a predetermined pattern through the region of the object containing the discontinuity. Relative attenuation data of the beam is determined within the predetermined pattern having a first data component that includes attenuation data through the region. The relative attenuation data is input to a pseudo-local tomography function, where the difference between the internal density and the pseudo-local tomography function is computed across the discontinuity. The pseudo-local tomography function outputs the location of the discontinuity and the difference in density between the first density and the second density.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 1996},
month = {Mon Jan 01 00:00:00 EST 1996}
}
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A new fast algorithm for the evaluation of regions of interest and statistical uncertainty in computed tomography
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