A method for zinger artifact reduction in high-energy x-ray computed tomography

J. C E Mertens; J. J. Williams; Nikhilesh Chawla

doi:10.1016/j.nima.2015.08.012

A method for zinger artifact reduction in high-energy x-ray computed tomography

J. C E Mertens, J. J. Williams, Nikhilesh Chawla

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

In x-ray imaging, the interaction of stray x-rays with an imaging sensor may produce speckle-type noise (i.e. zingers) which produces artifacts in tomography reconstructions. Zinger reduction can be accomplished through detector design and image filtering. A standard method for zinger filtering exists but produces many false positives and high discrepancy with the true signal. An approach is proposed through selective temporal frame averaging in which zinger noise is removed with improvements over the standard method. The accuracy of the proposed approach is compared with a standard approach using simulated projections of a phantom containing known artificial zinger and locations density.

Original language	English (US)
Pages (from-to)	82-92
Number of pages	11
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	800
DOIs	https://doi.org/10.1016/j.nima.2015.08.012
State	Published - Nov 11 2015

Keywords

Detector
Filter
Noise
X-ray
Zinger

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

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10.1016/j.nima.2015.08.012

Cite this

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title = "A method for zinger artifact reduction in high-energy x-ray computed tomography",

abstract = "In x-ray imaging, the interaction of stray x-rays with an imaging sensor may produce speckle-type noise (i.e. zingers) which produces artifacts in tomography reconstructions. Zinger reduction can be accomplished through detector design and image filtering. A standard method for zinger filtering exists but produces many false positives and high discrepancy with the true signal. An approach is proposed through selective temporal frame averaging in which zinger noise is removed with improvements over the standard method. The accuracy of the proposed approach is compared with a standard approach using simulated projections of a phantom containing known artificial zinger and locations density.",

keywords = "Detector, Filter, Noise, X-ray, Zinger",

author = "Mertens, {J. C E} and Williams, {J. J.} and Nikhilesh Chawla",

note = "Funding Information: We would like to gratefully acknowledge funding and support from the Arizona State University Security and Defense Systems Initiative and the Semiconductor Research Corporation tasks 1292.086 and 1292.087. Publisher Copyright: {\textcopyright} 2015 Elsevier B.V. All rights reserved.",

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doi = "10.1016/j.nima.2015.08.012",

language = "English (US)",

volume = "800",

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T1 - A method for zinger artifact reduction in high-energy x-ray computed tomography

AU - Mertens, J. C E

AU - Williams, J. J.

AU - Chawla, Nikhilesh

N1 - Funding Information: We would like to gratefully acknowledge funding and support from the Arizona State University Security and Defense Systems Initiative and the Semiconductor Research Corporation tasks 1292.086 and 1292.087. Publisher Copyright: © 2015 Elsevier B.V. All rights reserved.

PY - 2015/11/11

Y1 - 2015/11/11

N2 - In x-ray imaging, the interaction of stray x-rays with an imaging sensor may produce speckle-type noise (i.e. zingers) which produces artifacts in tomography reconstructions. Zinger reduction can be accomplished through detector design and image filtering. A standard method for zinger filtering exists but produces many false positives and high discrepancy with the true signal. An approach is proposed through selective temporal frame averaging in which zinger noise is removed with improvements over the standard method. The accuracy of the proposed approach is compared with a standard approach using simulated projections of a phantom containing known artificial zinger and locations density.

AB - In x-ray imaging, the interaction of stray x-rays with an imaging sensor may produce speckle-type noise (i.e. zingers) which produces artifacts in tomography reconstructions. Zinger reduction can be accomplished through detector design and image filtering. A standard method for zinger filtering exists but produces many false positives and high discrepancy with the true signal. An approach is proposed through selective temporal frame averaging in which zinger noise is removed with improvements over the standard method. The accuracy of the proposed approach is compared with a standard approach using simulated projections of a phantom containing known artificial zinger and locations density.

KW - Detector

KW - Filter

KW - Noise

KW - X-ray

KW - Zinger

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DO - 10.1016/j.nima.2015.08.012

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SN - 0168-9002

VL - 800

SP - 82

EP - 92

JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

ER -

A method for zinger artifact reduction in high-energy x-ray computed tomography

Abstract

Keywords

ASJC Scopus subject areas

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