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Title: Precision estimates for tomographic nondestructive assay

Abstract

One technique being applied to improve the accuracy of assays of waste in large containers is computerized tomography (CT). Research on the application of CT to improve both neutron and gamma-ray assays of waste is being carried out at LANL. For example, tomographic gamma scanning (TGS) is a single-photon emission CT technique that corrects for the attenuation of gamma rays emitted from the sample using attenuation images from transmission CT. By accounting for the distribution of emitting material and correcting for the attenuation of the emitted gamma rays, TGS is able to achieve highly accurate assays of radionuclides in medium-density wastes. It is important to develope methods to estimate the precision of such assays, and this paper explores this problem by examining the precision estimators for TGS.

Authors:
 [1]
  1. Los Alamos National Lab., NM (United States)
Publication Date:
OSTI Identifier:
217913
Report Number(s):
CONF-9509215-
Journal ID: TANSAO; ISSN 0003-018X; TRN: 95:008188-0025
Resource Type:
Journal Article
Journal Name:
Transactions of the American Nuclear Society
Additional Journal Information:
Journal Volume: 72; Journal Issue: Suppl.1; Conference: 5. international American Nuclear Society (ANS) conference, Jackson Hole, WY (United States), 24-29 Sep 1995; Other Information: PBD: 1995
Country of Publication:
United States
Language:
English
Subject:
05 NUCLEAR FUELS; RADIOACTIVE WASTES; SINGLE PHOTON EMISSION COMPUTED TOMOGRAPHY; NONDESTRUCTIVE ANALYSIS; QUALITATIVE CHEMICAL ANALYSIS; SAFEGUARDS

Citation Formats

Prettyman, T H. Precision estimates for tomographic nondestructive assay. United States: N. p., 1995. Web.
Prettyman, T H. Precision estimates for tomographic nondestructive assay. United States.
Prettyman, T H. 1995. "Precision estimates for tomographic nondestructive assay". United States.
@article{osti_217913,
title = {Precision estimates for tomographic nondestructive assay},
author = {Prettyman, T H},
abstractNote = {One technique being applied to improve the accuracy of assays of waste in large containers is computerized tomography (CT). Research on the application of CT to improve both neutron and gamma-ray assays of waste is being carried out at LANL. For example, tomographic gamma scanning (TGS) is a single-photon emission CT technique that corrects for the attenuation of gamma rays emitted from the sample using attenuation images from transmission CT. By accounting for the distribution of emitting material and correcting for the attenuation of the emitted gamma rays, TGS is able to achieve highly accurate assays of radionuclides in medium-density wastes. It is important to develope methods to estimate the precision of such assays, and this paper explores this problem by examining the precision estimators for TGS.},
doi = {},
url = {https://www.osti.gov/biblio/217913}, journal = {Transactions of the American Nuclear Society},
number = Suppl.1,
volume = 72,
place = {United States},
year = {Sun Dec 31 00:00:00 EST 1995},
month = {Sun Dec 31 00:00:00 EST 1995}
}