Collimator-free photon tomography
Abstract
A method of uncollimated single photon emission computed tomography includes administering a radioisotope to a patient for producing gamma ray photons from a source inside the patient. Emissivity of the photons is measured externally of the patient with an uncollimated gamma camera at a plurality of measurement positions surrounding the patient for obtaining corresponding energy spectrums thereat. Photon emissivity at the plurality of measurement positions is predicted using an initial prediction of an image of the source. The predicted and measured photon emissivities are compared to obtain differences therebetween. Prediction and comparison is iterated by updating the image prediction until the differences are below a threshold for obtaining a final prediction of the source image.
- Inventors:
-
- Yaphank, NY
- Westbury, NY
- Issue Date:
- Research Org.:
- Associated Universities, Inc., Upton, NY (United States)
- OSTI Identifier:
- 871883
- Patent Number(s):
- 5818050
- Application Number:
- 08/838,493
- Assignee:
- Brookhaven Science Associates LLC (Upton, NY)
- Patent Classifications (CPCs):
-
A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61B - DIAGNOSIS
G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION
- DOE Contract Number:
- AC02-76CH00016
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- collimator-free; photon; tomography; method; uncollimated; single; emission; computed; administering; radioisotope; patient; producing; gamma; ray; photons; source; inside; emissivity; measured; externally; camera; plurality; measurement; positions; surrounding; obtaining; corresponding; energy; spectrums; thereat; predicted; initial; prediction; image; emissivities; compared; obtain; differences; therebetween; comparison; iterated; updating; below; threshold; final; computed tomography; energy spectrum; gamma ray; photon emission; single photon; emission computed; source inside; gamma camera; ray photons; /250/
Citation Formats
Dilmanian, F Avraham, and Barbour, Randall L. Collimator-free photon tomography. United States: N. p., 1998.
Web.
Dilmanian, F Avraham, & Barbour, Randall L. Collimator-free photon tomography. United States.
Dilmanian, F Avraham, and Barbour, Randall L. Tue .
"Collimator-free photon tomography". United States. https://www.osti.gov/servlets/purl/871883.
@article{osti_871883,
title = {Collimator-free photon tomography},
author = {Dilmanian, F Avraham and Barbour, Randall L},
abstractNote = {A method of uncollimated single photon emission computed tomography includes administering a radioisotope to a patient for producing gamma ray photons from a source inside the patient. Emissivity of the photons is measured externally of the patient with an uncollimated gamma camera at a plurality of measurement positions surrounding the patient for obtaining corresponding energy spectrums thereat. Photon emissivity at the plurality of measurement positions is predicted using an initial prediction of an image of the source. The predicted and measured photon emissivities are compared to obtain differences therebetween. Prediction and comparison is iterated by updating the image prediction until the differences are below a threshold for obtaining a final prediction of the source image.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {10}
}
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