Beam hardening, noise, and contrast considerations in selective iodine digital radiography

S. J. Riederer; N. J. Pelc; J. P.J. Georges; G. S. Keyes; A. L. Hall; L. A. Lehmann

doi:10.1109/TNS.1981.4331167

Beam hardening, noise, and contrast considerations in selective iodine digital radiography

S. J. Riederer, N. J. Pelc, J. P.J. Georges, G. S. Keyes, A. L. Hall, L. A. Lehmann

Radiology

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6 Scopus citations

Abstract

Temporal and dual beam energy subtraction are discussed in conjunction with selective imaging of iodine. Several different kinds of energy subtraction are described and their relative sensitivities to noise are predicted. Effects due to beam hardening are demonstrated for temporal and energy subtraction. Hardening errors are more severe for the latter case by abouta factor of three. A possible hardening correction is presented for energy subtraction and an experimental example is provided. Techniques for choosing optimized spectra and data handling for dual beam energy subtraction are presented. These include qualitative principles for spectral selection, identification of the individual noise contributions from the two beams, use of weighted least squares fits, and beam hardening and exposure reduction through the use of filtration.

Original language	English (US)
Pages (from-to)	213-218
Number of pages	6
Journal	IEEE Transactions on Nuclear Science
Volume	28
Issue number	1
DOIs	https://doi.org/10.1109/TNS.1981.4331167
State	Published - Feb 1981

ASJC Scopus subject areas

Nuclear and High Energy Physics
Nuclear Energy and Engineering
Electrical and Electronic Engineering

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abstract = "Temporal and dual beam energy subtraction are discussed in conjunction with selective imaging of iodine. Several different kinds of energy subtraction are described and their relative sensitivities to noise are predicted. Effects due to beam hardening are demonstrated for temporal and energy subtraction. Hardening errors are more severe for the latter case by abouta factor of three. A possible hardening correction is presented for energy subtraction and an experimental example is provided. Techniques for choosing optimized spectra and data handling for dual beam energy subtraction are presented. These include qualitative principles for spectral selection, identification of the individual noise contributions from the two beams, use of weighted least squares fits, and beam hardening and exposure reduction through the use of filtration.",

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AU - Riederer, S. J.

AU - Pelc, N. J.

AU - Georges, J. P.J.

AU - Keyes, G. S.

AU - Hall, A. L.

AU - Lehmann, L. A.

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N2 - Temporal and dual beam energy subtraction are discussed in conjunction with selective imaging of iodine. Several different kinds of energy subtraction are described and their relative sensitivities to noise are predicted. Effects due to beam hardening are demonstrated for temporal and energy subtraction. Hardening errors are more severe for the latter case by abouta factor of three. A possible hardening correction is presented for energy subtraction and an experimental example is provided. Techniques for choosing optimized spectra and data handling for dual beam energy subtraction are presented. These include qualitative principles for spectral selection, identification of the individual noise contributions from the two beams, use of weighted least squares fits, and beam hardening and exposure reduction through the use of filtration.

AB - Temporal and dual beam energy subtraction are discussed in conjunction with selective imaging of iodine. Several different kinds of energy subtraction are described and their relative sensitivities to noise are predicted. Effects due to beam hardening are demonstrated for temporal and energy subtraction. Hardening errors are more severe for the latter case by abouta factor of three. A possible hardening correction is presented for energy subtraction and an experimental example is provided. Techniques for choosing optimized spectra and data handling for dual beam energy subtraction are presented. These include qualitative principles for spectral selection, identification of the individual noise contributions from the two beams, use of weighted least squares fits, and beam hardening and exposure reduction through the use of filtration.

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Beam hardening, noise, and contrast considerations in selective iodine digital radiography

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