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Title: Simultaneous CT and SPECT tomography using CZT detectors

Abstract

A method for simultaneous transmission x-ray computed tomography (CT) and single photon emission tomography (SPECT) comprises the steps of: injecting a subject with a tracer compound tagged with a .gamma.-ray emitting nuclide; directing an x-ray source toward the subject; rotating the x-ray source around the subject; emitting x-rays during the rotating step; rotating a cadmium zinc telluride (CZT) two-sided detector on an opposite side of the subject from the source; simultaneously detecting the position and energy of each pulsed x-ray and each emitted .gamma.-ray captured by the CZT detector; recording data for each position and each energy of each the captured x-ray and .gamma.-ray; and, creating CT and SPECT images from the recorded data. The transmitted energy levels of the x-rays lower are biased lower than energy levels of the .gamma.-rays. The x-ray source is operated in a continuous mode. The method can be implemented at ambient temperatures.

Inventors:
 [1];  [2];  [1];  [3]
  1. Knoxville, TN
  2. Lubbock, TX
  3. (Alcoa, TN)
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
OSTI Identifier:
874490
Patent Number(s):
6399951
Assignee:
UT-Battelle, LLC (Oak Ridge, TN)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION
A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61B - DIAGNOSIS
DOE Contract Number:  
AC05-96OR22464
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
simultaneous; tomography; czt; detectors; method; transmission; x-ray; computed; single; photon; emission; steps; injecting; subject; tracer; compound; tagged; gamma-ray; emitting; nuclide; directing; source; rotating; x-rays; step; cadmium; zinc; telluride; two-sided; detector; opposite; simultaneously; detecting; position; energy; pulsed; emitted; captured; recording; data; creating; images; recorded; transmitted; levels; biased; gamma-rays; operated; continuous; mode; implemented; ambient; temperatures; ambient temperature; x-ray source; energy level; single photon; photon emission; computed tomography; simultaneous transmission; /250/

Citation Formats

Paulus, Michael J, Sari-Sarraf, Hamed, Simpson, Michael L, and Britton, Jr., Charles L. Simultaneous CT and SPECT tomography using CZT detectors. United States: N. p., 2002. Web.
Paulus, Michael J, Sari-Sarraf, Hamed, Simpson, Michael L, & Britton, Jr., Charles L. Simultaneous CT and SPECT tomography using CZT detectors. United States.
Paulus, Michael J, Sari-Sarraf, Hamed, Simpson, Michael L, and Britton, Jr., Charles L. Tue . "Simultaneous CT and SPECT tomography using CZT detectors". United States. https://www.osti.gov/servlets/purl/874490.
@article{osti_874490,
title = {Simultaneous CT and SPECT tomography using CZT detectors},
author = {Paulus, Michael J and Sari-Sarraf, Hamed and Simpson, Michael L and Britton, Jr., Charles L.},
abstractNote = {A method for simultaneous transmission x-ray computed tomography (CT) and single photon emission tomography (SPECT) comprises the steps of: injecting a subject with a tracer compound tagged with a .gamma.-ray emitting nuclide; directing an x-ray source toward the subject; rotating the x-ray source around the subject; emitting x-rays during the rotating step; rotating a cadmium zinc telluride (CZT) two-sided detector on an opposite side of the subject from the source; simultaneously detecting the position and energy of each pulsed x-ray and each emitted .gamma.-ray captured by the CZT detector; recording data for each position and each energy of each the captured x-ray and .gamma.-ray; and, creating CT and SPECT images from the recorded data. The transmitted energy levels of the x-rays lower are biased lower than energy levels of the .gamma.-rays. The x-ray source is operated in a continuous mode. The method can be implemented at ambient temperatures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}

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